Hi all,
I am building a app to integrate into power BI where I need a text box for the user to enter comments. This text box should have relationship with Month and Year Filter in power BI. The comments that are posted for earlier months also should be visible when the user filters month. I have a sharepoint list for the comments to get stored.
Also, when One user is entering comments, the text box should be locked so that other user cant comment (I want to have a message showing them that, "Other user is entering comments, Please wait").
As I am new to power apps, please help me out in implementing this. I want codes that has to be written for implementing this idea.

Thanks in advance