Problems with rowCount()

[Ghost_of_Magellan]

I think that at this point it's obvious I'm not the sharpest tool in the shed at javascript or QtDesigner.

I am using javascript to make a script for QCad (Designer and drafting program)

Well, I built a table widget and filled it with a temporary array, whose dimentions are known to me.
functions widgets["Obj_table"].insertRow(i); and widgets["Obj_table"].removeRow(entityIds.length-i-1); work perfectly.

Now I need to work with the contents of the table itself for which I need the rowcount. Browsing the library on your site I know that I am supposed to acquire it through: int QTableWidget::rowCount() const, and I'm assuming the javascript equivalent is something like var linestotal = widgets["Obj_table"].rowCount();
Unfortunately, using this code blocks my application, meaning there is a pobable code error here.

I would appreciate corrections in any mistake I'm doing.

Thank you very much.