Getting error in value display after binding validation service

[RM12]

Hello,

         I create validation service, bind that validation service to all field and bind result of validation service to value display , validation service execute properly but after binding cannot get the output.please prefer below attachment

Thanks in advance

[PaiChung]

How do you know the validation is executing properly?

It should be producing a True or False correct?

Your value display does it have any formatting set? If not maybe try setting it to Boolean or String or ... Number