hello i have got a trouble with my stored variable. once initialized with à 0 value, the stored variable still keeps the null value. here is a copy of my screen. Thanks by advance
Ben from France
You should use the set variable block this one

Hello overtuner and many thanks for your answer.
The thing is that i would like to store the result. if the resul is null or false i go to the connection screen. it it’s true i avoid the connection screen. 
thanks a lot it’s ok 