Hiding table fields in Personas 3.0

I am able to hide table columns on the webgui but is not being translated to the regular gui.

As shown on attachment, I removed (HIDE) all the fileds after MPN material column using personas on sap webgui but when go to my sapgui 7.40(patch 8) and click on the flavor I just created, the table columns are not hidden.

any ideas why?

I am on kernel 7.42

UPDATE : Its working on FB60 transaction. but I can't make it seem to work in ME51N.

I have read to go to table control in ME51N but I have no idea what this mean.

thanks