Getting the value of a dynpro field in an exit for a standard search help.

Hallo Experts!
I need to modify the selected data displayed in standard sap search help: H_T357
What I've done is create an exit for the search help.
Then, when CALLCONTROL-STEP = 'DISP' I use the function module F4UT_PARAMETER_VALUE_GET and I get the value of the parameter 'WERKS' correctly. I think that this function module can only obtain values from the parameters of the search help. Well, here is the problem, I would like to get the values of dynpro fields
'ILOA-STORT' and 'VIQMEL-QMART' (warning type) in transaction IW21.
I prefer not to add these fields as parameters to the standard search help: H_T357.
Any ideas for getting the value of these fields? I've seen functions modules: F4UT_GET_ENVIRONMENT and F4UT_SH_SIC_GET_FIELDS. But I don't know if I can use them for my porpuses.
Thanks a lot in advance.

Hello again,
I have already solved the problem using function module 'DYNP_VALUES_READ'.
Thanks, David.

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