Check and UnCheck Properties using CheckBox in power apps

Requirements: When the user click on data(gallery) CheckBox the main test CheckBox is on UnCheck, when it is on Check then the data CheckBox is on UnCheck.

Firstly need to have a SharePoint list “Project” to connect with Power apps

• Take a blank Canvas app, provide a name for the application
  • Add CheckBox1-
    • OnCheck Property:- Set(Varcheck,true)
    • OnUnCheck Property:- Set(Varcheck,false)
  • Add CheckBox2 inside the Gallery-
    • OnUnCheck Property:- UpdateContext({Check2:false})
    • Reset Property:- checkVar

• CheckBox1 is on UnCheck when the gallery CheckBox are on Check

• After making it Check the gallery CheckBox become UnCheck CheckBox