StringRegEx Help

[Sturmi]

Hey this is not the function itself but more the AutoIt Expression for it..

 

I need this for multiple programs. Output looks like this:

 

"X"

"X_1"

"X_2"

"X_3"

and so on

When I tried with some RegEx Tools I only found X alone or X and _1 ... Can someone help me with this expression ? thanks 

 

[genius257]

"X(?:[_][0-9])?"
Or
"X(?:[_][0-9]+)?"

 

Edited September 20, 2016 by genius257

[Sturmi]

Ok thanks for quick help. I will try to figure out myself in future. bit confusing at beginning

 

Edited September 20, 2016 by Sturmi