title: How to use if condition in powerapp for populating dropdown which depends on selection of a control
body: <p>I am building a powerapp where I have a radiobutton list , if any item of the radiobuttonlist is selected then dropdown will populate accordingly else it should show a default value such as Select a Product. I want to use if conditon for Items Property of dropdowncontrol this e.g.</p>
  
  <p>Items = 
  if(IsBlank(Radio.Selected.Value),DropDown.Selected.Value = "Select Product", Filter(ProductDemands, ProductValue = Radio.Selected.Value))</p>
  
  <hr>
  
  <p>where ProductDemands is name of entity
         ProducValue is column name</p>
  
  <p>I am unable to acheive the same. I am getting syntax errors and warnings for the same.</p>