How can I make this button?

[muzi]

This is a form view.

There is a button style in the form view.

The data type of the column is text.

And 'Valid If' is set.

How can I make the button.

The result I made was a drop down list, not a button.

[Steve]

Chang the column type to Enum with a base type of Text.

[muzi]

Thank you for your solution.

But what I am curious about is the button. even though the data type is text.

Plese check the sample blow.

sample