fix a bug in AddPythonTransformReaction
fix a bug in AddPythonTransformReaction

cjh1/tomviz,cryos/tomviz,OpenChemistry/tomviz,mathturtle/tomviz,cjh1/tomviz,thewtex/tomviz,OpenChemistry/tomviz,cryos/tomviz,mathturtle/tomviz,cjh1/tomviz,cryos/tomviz,OpenChemistry/tomviz,thewtex/tomviz,thewtex/tomviz,mathturtle/tomviz,OpenChemistry/tomviz