Not able to distinguish between sub sheets using sheet API

[alokbehria]

Hello 

I am building an App using flutter flow with their API calls. Here, I have one google sheets which contain many sub sheets. I am targeting to display data in flutter flow App, but the problem here that it's displaying data from main sheet and their values and not the value from sub sheet

I am using following parameter to get values from sub sheet giving ID , but it's giving values from main sheet and it's column.

GET https://sheets.googleapis.com/v4/spreadsheets/replacedwithmine/values/A:G20

Regards