Substitute Proccess data (FC=ST) by Manual Substitution (FC=SV)

Substitute Proccess data (FC=ST) by Manual Substitution (FC=SV)

Dear Mr./Mrs.
in your documentation for IEC850 driver, describe how to substitute a value, but you refer to "HMI documentation that i can't find it". i wrote the description in your document, it is ambiguous .
IEC850 Driver doc. Please define the variable clearly
16.5 PIXIT for Substitution model
sub1: Describe how to substitute a value (Question)
following steps:
1. create HMI variables for attributes
with FC=SV (*/subEna, subQ,
subID and e.g. subVal)
2. set values in HMI variables
(*/subVal, subQ, subID) to values
the IED then shall use while
substituting
3. set value TRUE to HMI variable
*/subEna.
Please refer HMI documentation for more
details about setting variable values