how to allow that in string controler will be only letters and no number

[gilbe]

how to allow that in string controler will be only letters and no number, and the  opposite.

tnx alot 

[DHerron]

This example should get you started.

https://decibel.ni.com/content/docs/DOC-30585

[Bijay]

Hi,

try this

Regards,

Bijay

[ben64]

You can also use Lexical Class from the comparison palette.

Ben64