i have probmels with my paraview calculator that before i declare something i receive this error. in addition i use paraview 5.12 windows edition

ParaView Support
1

ERROR: In vtkExprTkFunctionParser.cxx, line 955
vtkExprTkFunctionParser (000002A6D16E7640): Vector variable name is already registered as a scalar variable name

2

Please use another name for the result name array.