How to modify webdynpro parameter with NWA broken?

Hi experts,

Following some tutorials I have modified the parameter sap.ui.table.maxVisibleRowCount to -1 to remove the limitation of the webdynpro when copying rows of a table.

It seems that there is a problem with this parameter and the netweaver 7.3 because after the change NWA has stopped working.

The problem is I can't modify the parameter again because all the webdynpro crash.

I have tried with the configtool and this property is not there.

In previous versions I would use the visual admin but is not available anymore.

Anyone has any idea of how to modify the parameter again?

Thanks!.

Jorge