Set value for Dropdown from another dropdown in Nintex Form

Hi @Var560121 

This is possible in Classic Form through the usage of JavaScript.

In the Classic Form. Configure the Choices control as below

Assign the Name and the Choices. 

IMPORTANT: In the Advanced section. Set “Store Client ID in JavaScript variable” to Yes and provide a JavaScript variable name for it. I named is as “jsTestA” and “jsTestB”. The variable name is case-sensitive. 

Next, add the following JavaScript code.

Click Forms Setting in the Designer toolbar.

Expand the Custom JavaScript section

Add the following code

NWF.FormFiller.Events.RegisterAfterReady(function() {

  //This is the jsTestA on Change event handler.
  //This function is triggered each time the radio button changes value
  NWF$("#" + jsTestA).change(function() {

    //Here we retrieve the current value of jsTestA
    //The variable "varTestA" stores the value
    var varTestA = NWF$("#" + jsTestA + ' input:checked').val();

    //Here we set the value for jsTestB
    if (varTestA == "Yes") {
      // jsTestB is YES when jsTestA is YES
      NWF$('#' + jsTestB).find('input:radio[value="Yes"]').prop("checked",true);
    } else {
      // jsTestB is NO when jsTestA is NO
      NWF$("#" + jsTestB).find('input:radio[value="No"]').prop("checked",true);
    }
  });
});

Clear code without the comments

NWF.FormFiller.Events.RegisterAfterReady(function() {
  NWF$("#" + jsTestA).change(function() {
    //Get Value
    var varTestA = NWF$("#" + jsTestA + ' input:checked').val();
    //Set Value
    if (varTestA == "Yes") {
      NWF$('#' + jsTestB).find('input:radio[value="Yes"]').prop("checked",true);
    } else {
      NWF$("#" + jsTestB).find('input:radio[value="No"]').prop("checked",true);
    }
  });
});

Output