Hello.

I have a issue that I can't solve.

I have the field like a image, that I return the values W, T, @, CH or SAC.

So, I need to check if this values are in the 4 or 5 firts characters, but I don't have a pattern in my field.

https://i.ibb.co/SxstqgG/lista-obs.png

Can anyone help me?