Cascade Dropdown

Hi gopalk0002
You can achieve this by saving the values to be shown in the second drop-down on the selection of 1st drop-down and show the second one only after the first is selected. 
Make sure to do a null condition if the option is changed in the first one. Something like this.

load(
  local!dropdown1: {1,2,3},
  local!value1,
  local!value2,
  local!dropdown2,
  {
  a!dropdownField(
    label: "Dropdown 1",
    placeholderLabel: "Please select",
    choiceLabels: local!dropdown1,
    choiceValues: local!dropdown1,
    value: local!value1,
    saveInto: {
      local!value1,
      a!save(local!value2,NULL),
      if(local!value1=local!dropdown1[1],a!save(local!dropdown2,{4,5,6}),a!save(local!dropdown2,{7,8,9}))
    }
  ),
  a!dropdownField(
    showWhen: not(rule!APN_isBlank(local!value1)),
    label: "Dropdown 2",
    placeholderLabel: "Please select",
    choiceLabels: local!dropdown2,
    choiceValues: local!dropdown2,
    value: local!value2,
    saveInto: local!value2
 )
})

Thanks ekanshj for replying, if user selects second option or third option he will get same options in second dropdown. how can we configure it dynamically.

yes this has to be dynamic in nature based on selection for that either you have to use database queries where based on your selection it will pass as input and fetch the relevant options or you can create a decision which can be configured as per input and gives out the output.

Thanks ekanshj I configured in that way only.

Thanks ekanshj I configured in that way only.