How to add selector in grid acumatica mobile

Hi everyone!, 

I’m in trouble, because I tried to make a selector field but it doesn’t work, I checked the field in WSDL schema.

The field is Product in WSDL schema

<s:element minOccurs="0" maxOccurs="1" name="Product" type="tns:Field"/>

and the selector definition in the DAC is Product

 add field "Product"{
                selectorDisplayFormat = KeyDescription
                pickerType = Searchable
                weight = 2
            selector {
              add field "ProductID"
              add field "Description"
             }
              placeAfter field "Acepted"
            }

But I can't show that the field is searchable as the following field, but Owner field isn’t a grid control and my field is it.

Any help would be appreciated.!

Thanks