Table by reference

[girish53]

I am passing a table by reference to a subvi. I change the values in some cells. When I try to save the values I get Error 1055, object reference invalid. Attached are Testsppspp.vi, buildsetptprofile.vi and editrs232setting2.vi. After starting the testsppspp.vi, click on the Load/Specify Setpoint Profile button. In the buildsetptproflie vi it will display the original table. Click the Show Profile button to display the plot. When you hit the Save button (not the Save as CSV File button) I get the following error 

I think I have set the references correctly. I don't know why I get this error.

Thank you. 
Girish

[paul_cardinale]

In "buildsetptprofile.vi", in the case frame "Initialize", you have the method "Default Values:Reinitialize All To Default".

That changes "setpttbl" to not-a-refnum.

[PalanivelThiruvenkadam]

Few observations on the source code you have shared.

1. Make sure Error wires are properly connected  (All Property/Invoke Nodes connected to error wire based on the expected sequence of operation.

2.Place the Button Controls in the respective event structure created.

3.Connect the table control reference directly to the get set property nodes (This will solve your problem)