Error mapping parameters to subprocesse

Hi!

I'm using Bonita 5.9.1, and I want mapping a boolean var to a subprocess.

When I deploy at bonita studio the process, I catch a validation error that refer to the final datas of the var... This is the spanish error text:

"Reporte de error de validación: Faltan los datos de destino para el mapeo de entrada de (nombre de variable). Desea continuar de todas maneras?"

I can press the "Yes" option and the process work fine... But is very annoying have the validation error always in the process when apparently there is no error.

Any idea to solve it?

Thanks and regards