fixed #3601

Author: citius2280

M2/Macaulay2/packages/gfanInterface.m2

@@ -754,7 +754,7 @@ gfanConvertToNewRing (PolynomialRing) := R1 -> (
   R1Gens := gens R1;
   numDigits := length (toString (#R1Gens));
   R2 := (coefficientRing R1) new Array from (for i in 1..#R1Gens list (
-    value ("x" | demark ("",for i from 1 to numDigits-(length toString i) list "0") | toString i)
+    value ("local x" | demark ("",for i from 1 to numDigits-(length toString i) list "0") | toString i)
   ) );
   R2Gens := gens R2;
   generatorMapping := for i in 0..#(gens R1) - 1 list (R1Gens#i =>R2Gens#i);