Allow Only text and number

Mr_Smile
Participant III

How can allow only number and text in form column.

0 4 557
4 REPLIES 4

Please try in the valid_if of the column

Edit: Minor changes done to the expression.

Mr_Smile
Participant III

Alright, Iโ€™ll try.

Mr_Smile
Participant III

Not working

Details please

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