RE - Form level changes in AX 2012

Hi Everyone,

I have a customized form in AX 2012.

In that form i am having two fields.

1st field is an enum (Enum values are "Lead" , " Opportunity", "Customer")

2nd field is an drop down field .

Now while creating a new record , If the user selects "Lead" means the lead master should come in the drop down of the 2nd field. Similarly the respective masters should come for  "opportunity" & "Customer".

Help me to solve this.

Regards,

Madhan