How can I receive which slider was selected

I need to receive which slider is selected and value has been changed... I try to put some boolean markers in my method when I added a listener on Value Changed at slider.

 bool valy=false;
 
 void MyMethod()
 { 
    valy = true;
 }

I have a another method where I receive data from client using NetworkMessage but when I try to check

 if(valy == true)
 {
     //do something
 }

• not working ... any ideea?