Appsheet Expression

[Marcusmickey11]

Hello everyone.

I've been trying this for a while now but ive not been able to do it.

I want a column to display error when another column is blank.

I have tried various ISBLANK() expressions but it isn't working.

I will appreciate anyone's help with this.

Thanks.

[Izzat_Safrah]

Submit an image showing where you want to display the error.