Hi,
I want to create an App which allow 4 people to enter their Decision : "Approve" Or "Not Approve"
If all 4 people enter "Approve", then a workflow will be run to send out a email.
My thinking is to create an input table which only have Name Column and Decision Column, Name Column only have A,B,C,D , four people's names, While Decision Column leaves blank waiting for 4 people to enter.
1. Currently, I'm create an APP, and input file looks like this:

2. Next is to creating first dropdown list to allow 4 people to select their names ,which like following:

3.Then SELECT change Decision Column data type to String and Second dropdown list is created like following:
So this is the whole App and I click run and select A and Approve:
Which gives me a error:

Any ideas how to solve this?
Thanks