Mission planner python scripts have any action

Hello !!
I’m trying to test and create python’s scripts for my quad which is correctly connected with MP by a bluetooth connection ( APM2.6 telemetry port). But when I run a script , it’s run until the end without python’s error ( as I can see in the Script console) , but there are any action on the quad. I’ve forgotten something ? However there are no problem to interact with my quad from every MP’s panels.

I have to modify my question . In fact , the commands print cs.xxx (alt , gpshdop …) receive an answer
from the quad ; then the connection is OK . But the commands Script.SendRC , i.e. Script.SendRC(4,2000,True), to
arm the motors are inoperative.

Do you have your code?