How can I get blob value from one table to another in NAV 2016?

Hi,

I have a blob field (memo, not compressed) in table1 having a value.

How can I get a blob value from table1 to table2 blob field in NAV 2016? Table2 blob field is having the same field number like in table1.

I have tried for instance several tricks like transferfields, calcfields, createinstream, createoutstream, copystream functions and so on.

If I for example execute calcfields for table1 blob field it empties a blob value from memory.

Pls give a short example how I can do that in NAV 2016 if you have any. Thanks in advance!