diff --git a/benchmarks/boolean/wikipedia.geo b/benchmarks/boolean/wikipedia.geo
index 716ede956aac77d161845c4984b6f4ffa7edabcf..4f5adcff16996b442c0cc20f02c6166b01b1dc90 100644
--- a/benchmarks/boolean/wikipedia.geo
+++ b/benchmarks/boolean/wikipedia.geo
@@ -4,9 +4,9 @@ Mesh.Algorithm = 6;
 Mesh.CharacteristicLengthMin = 0.4;
 Mesh.CharacteristicLengthMax = 0.4;
 
-R = 1.4;
-s = .7;
-t = 1.25;
+R = DefineNumber[ 1.4 , Name "Parameters/Dimension of the Block" ];
+s = DefineNumber[  .7 , Name "Parameters/Cylinder of radius s *R" ];
+t = DefineNumber[ 1.25, Name "Parameters/Sphere   of radius t *R" ];
 
 Block(1) = {-R,-R,-R, R,R,R};
 
@@ -21,3 +21,5 @@ Cylinder(6) = {0,0,-2*R, 0,0,2*R, R*s};
 BooleanUnion(7) = { Volume{4}; Delete; }{ Volume{5}; Delete; };
 BooleanUnion(8) = { Volume{6}; Delete; }{ Volume{7}; Delete; };
 BooleanSubtraction(9) = { Volume{3}; Delete; }{ Volume{8}; Delete; };
+
+