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You can synchronize unprotected Fields and Variables with
their binding DDEs using the Equivalence feature. This implies that
a change in the value of DDE bound to the field/variable would change
the value of the variable/field and vice versa. Note: The equivalence
feature is optional and should be used carefully based on your business
requirements.
When creating a letter, on the Letter
Outline interface, switch to Data Editing View by selecting from
the drop down.
Check the Data Element Name column and select a variable
from the list.
Select Data Dictionary from the Linkage Type drop down list.
It populates all the data Dictionary Elements associated with the
Data Dictionary.
Select the DDE you wish to associate with the variable by
double clicking your selection. The selected DDE is displayed in
the Data Dictionary Element field below the DDE list.
In the DDE list, uncheck the Protected checkbox for the selected
Data Dictionary Element. This populates Caption, Equivalence, and
Tooltip fields below the Linkage Type drop down.
Check the Equivalence checkbox.
Click Done to apply Equivalence on the selected variable
and the DDE.
For example, consider a variable Test_Var bound
to a primitive numeric DDE Var_Data with a default
value of 2. Now, if Var_Data is also used
by Text module Text_T1 in an unprotected manner,
updating its value to 3 changes the value of Test_Var to 3.If
Test_Var is manually updated to 4, the value of Var_Data used
by Text_T1 is also updated to 4. This is
because Test_Var is marked equivalent to Var_Data.
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