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STEP 7 / STEP 7 Lite: Structured control language code interpreted Automation System Statement list

Hi,
I have a problem with  a uploaded program from PLC.
I don't have the source code of that program.
While i want to edit the program i am facing some problems compiling it. There are  some FB that are made in SCL prog. language , but they are interpreted as STL and there is where the problems lies.
I've installed the SCL but with no result yet .
I have tries to move the code of one of the FB to STL editor, but when i compile it it displays a syntax error to every pointer that is loaded from certain DB like in the attached pict
Now my question is how can I restore these FB to their original state and complie and download to PLC with the changes that I've made.
BR

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