it's possible get value from process variable to use in form bonita ?

Hello,

I try read value from a process variable for use in my form depend of value I show print text and execute validation. 

 

It's possible?

Regard

Yes it's posible:
REST API BPM API | Bonita Documentation (bonitasoft.com)

TLDR: 

../API/bpm/activityVariable/{{taskId}}/processVariableName