Hi Sonu,

You should be writing an on change client script on the first drop down variable and the dependent values can be populated on the 2nd dropdown. If the values are stored on a different table, then you need to make a server call from your client script or if values are hard coded, you can just add these lines after modifying logic according to your requirement.

if(newValue == 'a'){

g_form.addOption('seond_variable_name', 'b', 'B');

g_form.addOption('seond_variable_name', 'c', 'C');

}

Thank You

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