diff --git a/libs/main/math/pievaluator.cpp b/libs/main/math/pievaluator.cpp
index 496d1f53..92445c6c 100644
--- a/libs/main/math/pievaluator.cpp
+++ b/libs/main/math/pievaluator.cpp
@@ -189,9 +189,8 @@ void PIEvaluatorContent::addFunction(const PIString & name, int args) {
 
 
 int PIEvaluatorContent::addVariable(const PIString & name, const complexd & val) {
-	int ind = variables.size_s();
-	variables << PIEvaluatorTypes::Variable(name, val, ind);
-	return ind;
+	variables << PIEvaluatorTypes::Variable(name, val);
+	return variables.size_s()-1;
 }
 
 
@@ -216,7 +215,7 @@ int PIEvaluatorContent::findFunction(const PIString & name) const {
 int PIEvaluatorContent::findVariable(const PIString & var_name) const {
 	for (uint i = 0; i < variables.size(); i++)
 		if (variables[i].name == var_name)
-			return variables[i].index;
+			return i;
 	return -1;
 }
 
@@ -251,7 +250,7 @@ void PIEvaluatorContent::removeVariable(int index) {
 void PIEvaluatorContent::clearCustomVariables() {
 	variables.clear();
 	addVariable(PIStringAscii("i" ), complexd_i);
-	addVariable(PIStringAscii("pi"), atan(1.) * 4.);
+	addVariable(PIStringAscii("pi"), 3.141592653589793238462643383280);
 	addVariable(PIStringAscii("e" ), exp(1.));
 	cv_count = variables.size_s();
 }
@@ -308,8 +307,6 @@ BaseFunctions PIEvaluatorContent::getBaseFunction(const PIString & name) {
 void PIEvaluatorContent::dump() {
 	for (int i = 0; i < variables.size_s(); ++i) {
 		Variable v(variables[i]);
-		PIString str;
-		//str << "(ind " << v.index << ", mapped " << var_index.value(v.index, -1) << ")";
 		piCout << i << v.name << "=" << v.value;
 	}
 }
@@ -483,20 +480,19 @@ bool PIEvaluator::fillElements() {
 		}
 	}
 	cnum = 0;
-	PIMap<int, int> var_index;
-	PIVector<PIEvaluatorTypes::Variable> svariables = content.variables;
-	for (int i = 0; i < svariables.size_s(); ++i)
-		svariables[i].index = i;
-	svariables.sort();
-	for (int i = 0; i < svariables.size_s(); i++) {
-		curfind = svariables[i].name;
+	PIVector<PIPair<int, int> > var_index;
+	for (int i = 0; i < content.variables.size_s(); ++i)
+		var_index << PIPair<int, int>(i, content.variables[i].name.length());
+	var_index.sort([](const PIPair<int, int> * v1, const PIPair<int, int> * v2)->int {return v1->second > v2->second ? -1 : (v1->second == v2->second ? 0 : 1);});
+	for (int i = 0; i < var_index.size_s(); i++) {
+		curfind = content.variables[var_index[i].first].name;
 		flen = curfind.length();
 		fstart = 0;
 		while (fstart >= 0) {
 			fstart = tmps.find(curfind, fstart);
 			if (fstart < 0) break;
 			for (int j = fstart; j < fstart + flen; j++) {
-				elements[j].set(etVariable, cnum, svariables[i].index);
+				elements[j].set(etVariable, cnum, var_index[i].first);
 				tmps.replace(j, 1, fc);
 			}
 			cnum++;
diff --git a/libs/main/math/pievaluator.h b/libs/main/math/pievaluator.h
index a6ea009d..596fc507 100644
--- a/libs/main/math/pievaluator.h
+++ b/libs/main/math/pievaluator.h
@@ -76,13 +76,12 @@ namespace PIEvaluatorTypes {
 		short arguments;
 	};
 	struct PIP_EXPORT Variable {
-		Variable() {value = 0.; index = -1;}
-		Variable(const PIString & var_name, complexd val, int ind = -1) {name = var_name; value = val; index = ind;}
-		int index;
+		Variable() {value = 0.;}
+		Variable(const PIString & var_name, complexd val) {name = var_name; value = val;}
 		PIString name;
 		complexd value;
 	};
-};
+}
 /*
 	≠	:
 	≥	}
@@ -231,8 +230,6 @@ private:
 
 inline bool operator ==(PIEvaluatorTypes::Element e1, PIEvaluatorTypes::Element e2) {return (e1.type == e2.type && e1.num == e2.num);}
 inline bool operator !=(PIEvaluatorTypes::Element e1, PIEvaluatorTypes::Element e2) {return (e1.type != e2.type || e1.num != e2.num);}
-inline bool operator < (PIEvaluatorTypes::Variable e1, PIEvaluatorTypes::Variable e2) {return e1.name >  e2.name;}
-inline bool operator ==(PIEvaluatorTypes::Variable e1, PIEvaluatorTypes::Variable e2) {return e1.name == e2.name;}
 
 inline PIByteArray & operator <<(PIByteArray & s, const PIEvaluatorTypes::Instruction & v) {
 	s << PIByteArray::RawData(&v, sizeof(v) - sizeof(v.operators)) << v.operators;
diff --git a/main.cpp b/main.cpp
index 0f49cc37..4485f0aa 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,53 +1,37 @@
 #include "pip.h"
-#include "pivariantsimple.h"
-
-#pragma pack(push, 1)
-struct MM {
-	int x;
-	int x2;
-	double y;
-	char c[16];
-	int e2;
-	int e;
-	//PIPointd h;
-};
-#pragma pack(pop)
-
-int Acnt = 0;
-
-class A {
-public:
-	A() {moved = false; i = "constructor"; piCout << "A()"; ++Acnt;}
-	A(const PIString & s): i(s) {moved = false; piCout << "A(String)"; ++Acnt;}
-	A(const A & a): i(a.i) {moved = false; piCout << "copy A(&)"; ++Acnt;}
-	A(A && a): i(std::move(a.i)) {moved = false; a.moved = true; piCout << "copy A(&&)"; ++Acnt;}
-	~A() {piCout << "~A()" << moved; --Acnt;}
-	void swap(A & a) {piCout << "swap A()"; piSwap(i, a.i);}
-	A & operator =(const A & a) {i = a.i; piCout << "= A&"; return *this;}
-	A & operator =(A && a) {piSwap(i, a.i); a.moved = true; piCout << "= A&&)"; return *this;}
-	bool operator ==(const A & a) {return true;}
-	PIString i;
-	bool moved;
-	MM m;
-	static void F(int) {}
-};
-
-inline PIByteArray & operator <<(PIByteArray & ba, const A & v) {ba << v.i << v.m; return ba;}
-inline PIByteArray & operator >>(PIByteArray & ba,       A & v) {ba >> v.i >> v.m; return ba;}
-
-inline PIByteArray & operator <<(PIByteArray & ba, const MM & v) {piCout << "<<"; ba << v.x << v.y << v.c; return ba;}
-inline PIByteArray & operator >>(PIByteArray & ba,       MM & v) {piCout << ">>"; ba >> v.x >> v.y >> v.c; return ba;}
 
 
 int main() {
-	PIMathVectorT3d v3({1,2,3});
-	PIMathVectord v(v3);
-	PIMathVectord v2({3,2,1});
-	piCout << v;
-	piCout << v2;
-	PIMathMatrixT22d m = PIMathMatrixT22d::identity();
-	piCout << m;
-	m.rotate(toRad(90.));
-	piCout << m;
+	PIVector<int> indexes;
+	PIEvaluator eval;
+	int dims = 3;
+	indexes << eval.setVariable("l", complexd(1.));
+	indexes << eval.setVariable("mc", complexd(1.));
+	for (int i = 0; i < dims; ++i) {
+		indexes << eval.setVariable("t" + PIString::fromNumber(i), complexd(1.));
+		indexes << eval.setVariable("tv" + PIString::fromNumber(i), complexd(1.));
+	}
+	for (int i = 0; i < dims; ++i) {
+		indexes << eval.setVariable("m" + PIString::fromNumber(i), complexd(1.));
+		indexes << eval.setVariable("mv" + PIString::fromNumber(i), complexd(1.));
+	}
+	piCout << indexes;
+
+	indexes.clear();
+	indexes << eval.setVariable("l", complexd(1.));
+	indexes << eval.setVariable("mc", complexd(1.));
+	for (int i = 0; i < dims; ++i) {
+		indexes << eval.setVariable("t" + PIString::fromNumber(i), complexd(1.));
+		indexes << eval.setVariable("tv" + PIString::fromNumber(i), complexd(1.));
+	}
+	for (int i = 0; i < dims; ++i) {
+		indexes << eval.setVariable("m" + PIString::fromNumber(i), complexd(1.));
+		indexes << eval.setVariable("mv" + PIString::fromNumber(i), complexd(1.));
+	}
+	piCout << indexes;
+
+	PIEvaluator * eval_x = new PIEvaluator();
+	piCout << eval_x->setVariable("t");
+	piCout << eval_x->setVariable("t");
 	return 0;
 }