How to show enum values based on another column in the same table

[Mohammed_Kamal]

Hi all,
I have a column named "Check type" Enum with text values "A", "B" and "C", and another column named "Line Name" with two options "X","Y".

I need to when Line Name is X then show only A in check type, and if Line name in Y then Show A,B and C. 

Another Topic:

Is it possible to hide the tabs from forms view (not only dim it).?

[TeeSee1]

Try this expression either In check types, valid-if or suggested values 

IFS(
 [Line Name] = "X", LIST("A"),
 [Line Name] = "Y", LIST("B", "C")
)