Form Column changes depending on Choice Value in preceding Column

[CMKJ_MCC]

I have a Sharepoint List like so, with each column being a Choice column: 

 Id         Stage 1             Stage 2            Stage 3                Stage 4

1           Complete         On Track              On Track              On Track

This appears as a Form in my Powerapp. When I change Stage 2 to 'At Risk' or 'Overdue', I need Stage 3 and Stage 4 to automatically change to 'At Risk' also. 

Any help would be greatly appreciated. 

[v-xiaochen-msft · Accepted solution]

Hi @CMKJ_MCC ,

I did a sample for you.

Besides, please use this formula 'Set(var,Blank())' on the onvisible property of screen /onstart property of app.

Best Regards,

Wearsky