How to get variable in FlowScope ?

Hello everybody;
In my web flow, I have a variable in FlowScope named "action", and i want to check this variable in validation method;

PHP Code:

---

if(action=="copy"){
doCopy;
}else{
doOther;
} 


---

But i don't know how to call "action" variable;
Please help me!
Thank a lot,

You really should be passing the flowscope variable as argument to your method...