Update a table in Dynamics AX 2012 automatically based on third field value

Hi,

I have a field "FieldABC" which is present in two different table "Table1" and "Table2".

I have created a new field "Field2" in table "Table2".

I want to copy the values of field "Field1" from "Table1".

Condition: I run a process and automatically a row is inserted in "Table2", but the field "Field2" is empty. It does not pick up the value automatically from the table "Table1" of field "Field1".

I have tried to use the insert method or update method, but still no output.