How to set Dynamic dropdown with studio

Hi,
I need to created dependent field type and industry.
if sect type from dropdown1 it should display related industry with dropdown2.

but when i use Dynamic dropdown field type with studo, its not working.
So please help how i can set dependent dropdown.
is there any developer guide or suggestion please?
Not getting proper solution.

Thanks,
Dipesh Patel

I have found solution below

So in my Parent Dropdow I create my Dropdown lists…
Example:
Parent Dropdown
Dropdown Name = Industry
Items list:
Aluminum
Steel
Stainless
Iron
Gold
Tin

Dynamic Dropdown
Dropdown Name = Sub_Industry
Items List:
Aluminum_Rolled
Aluminum_Sheet
Aluminum_Ingot
Aluminum_Extruded
Steel_Ingot
Steel_Sheet
Steel_Extruded
Steel_Wire
Stainless_404
Stainless_303
Stainless_316
Iron_Raw
Iron_Stock
Iron_Billet
Gold_Ingot
Gold_14K
Gold_24K
Gold_Powder
Tin_Sheet
Tin_Wire

When Adding Fields to the system for these Dropdowns the Parent is the Field name not the Parent Dropdown name
Example:
Parent Field Name: Industry
Label: Industry
Type: Dropdown

Dynamic Dropdown Field name: Sub_Industry
Label: Sub Industry
Type: Dynamic Dropdown