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DataTable Reading Failed


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I am working on Vision 120 "V120-22-ua2".

I am using the below "dll's"
ComDriver v and also tried
DataTables v
Xceed.compression v 3.7.8577.11540
Xceed.compression.Formats v 3.7.8577.11540

When I am trying to access the DataTable I am getting the below error 



whereas I am successfully connect to PLC with both VisiLogic and comdriver
and I am also able to Read and write the Operands in PLC in same project using the below code


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