Please help using "or" in a if statement

[magace]

Hello I am detecting the fist 3 characters of a string and I want the script to do something if they match.  This works

Local $smidds = StringMid($readsn,1,3)
ToolTip($smidds,0,0)
If $smidds = "CN0" Then
;do whatever
EndIf

However when I try this it detects every 3 character string and tries to "do whatever".  Not just the CN0, PH0, MY0

Local $smidds = StringMid($readsn,1,3)
ToolTip($smidds,0,0)
If $smidds = "CN0" or "MY0" or "PH0" Then
;do whatever
EndIf

Any help?  And thanks for all the help over the years autoit community!

[Anoop]

Try If $smidds = "CN0" or $smidds = "MY0" or $smidds = "PH0" Then

[magace]

Thanks!  That worked.

[Anoop]

3 hours ago, magace said:

Thanks!  That worked.

Please mark the topic for Solved. It should be a good practice.