# Help plz! Don’t find what’s wrong! **URL:** \ **Category:** Developer Tools\ **Created:** [August 31, 2007, 6:42pm UTC](https://tech-community.robotics.abb.com/t/help-plz-don-t-find-what-s-wrong/1416 "2007-08-31T18:42:17Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Tedenljung](https://avatars.discourse-cdn.com/v4/letter/t/45deac/32.png) [@Tedenljung](https://tech-community.robotics.abb.com/u/Tedenljung)\ **Post date:** [August 31, 2007, 6:42pm UTC](https://tech-community.robotics.abb.com/t/help-plz-don-t-find-what-s-wrong/1416/1 "2007-08-31T18:42:17Z")
Hello everybody! I’m new to RAB and trying to get my code to work but have problem to find whats wrong with it. Easy to find for someone that have worked longer with RAB I guess :stuck\_out\_tongue\_winking\_eye:. Im in hurry to get the basic to work, I will use RAB next Friday on a company show. Plz help! Attach my project. /Daniel [2007-08-31\_184001\_ModifySample.zip](http://forums.robotstudio.com/webwiz/Tedenljung/2007-08-31_184001_ModifySample.zip) ---
**Author:** ![RussD](https://avatars.discourse-cdn.com/v4/letter/r/dec6dc/32.png) [@RussD](https://tech-community.robotics.abb.com/u/RussD)\ **Post date:** [August 31, 2007, 8:09pm UTC](https://tech-community.robotics.abb.com/t/help-plz-don-t-find-what-s-wrong/1416/2 "2007-08-31T20:09:09Z")
Could you be more specific about what problem you are having? ---
**Author:** ![Tedenljung](https://avatars.discourse-cdn.com/v4/letter/t/45deac/32.png) [@Tedenljung](https://tech-community.robotics.abb.com/u/Tedenljung)\ **Post date:** [September 1, 2007, 9:36am UTC](https://tech-community.robotics.abb.com/t/help-plz-don-t-find-what-s-wrong/1416/3 "2007-09-01T09:36:23Z")
The PC project is almost a copy of Read/Write example from the manual. But I have changed it to show the problem in a textbox. I just want to Read/Write to a Num or Array when the program is finished. The problem is that I fill in Task, Module and valuename and dubbleclick on the robot in found robots. The only answer I get is “invalid client id”, whats wrong? ABB.Robotics.GenericControllerException: Invalid client id. at Adapters.Data.Get() at ABB.Robotics.Controllers.RapidDomain.RapidData.get\_Value() at ModifySample.BasicControllerForm.ListView1\_DoubleClick(Objec t sender, EventArgs e) in c:Visual Studio 2005ProjectsABBSamplesModifySampleModifySampleBasicCon trollerForm.vb:line 50 Real IRC5 controller version 5.09.01 RAB version 5.09 I hope this is better info of the problem. ---
**Author:** ![Tedenljung](https://avatars.discourse-cdn.com/v4/letter/t/45deac/32.png) [@Tedenljung](https://tech-community.robotics.abb.com/u/Tedenljung)\ **Post date:** [September 1, 2007, 7:44pm UTC](https://tech-community.robotics.abb.com/t/help-plz-don-t-find-what-s-wrong/1416/4 "2007-09-01T19:44:12Z")
Now I have fixed some other stuff but the main problem is still there! I Can’t get any value from the controller, I have now tested with both Virtual and Real Controller… Same problem, as post above. Can somebody help? Complete VB project: [2007-09-02\_133855\_ModifySample-3.zip](http://forums.robotstudio.com/webwiz/Tedenljung/2007-09-02_133855_ModifySample-3.zip) ---
**Author:** ![Ari\_Suomela](https://avatars.discourse-cdn.com/v4/letter/a/f04885/32.png) [@Ari\_Suomela](https://tech-community.robotics.abb.com/u/Ari_Suomela)\ **Post date:** [September 5, 2007, 10:04am UTC](https://tech-community.robotics.abb.com/t/help-plz-don-t-find-what-s-wrong/1416/5 "2007-09-05T10:04:35Z")
Hello Daniel, you need to logon the controller and then request mastership. Example added to your project: Private Sub btGet\_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btGet.Click Dim item As ListViewItem = Me.ListView1.SelectedItems(0) Dim CtrlInfo As ControllerInfo Dim myUserInfo As UserInfo = New UserInfo(“Default User”) If Not item.Tag Is Nothing Then CtrlInfo = DirectCast(item.Tag, ControllerInfo) If Not CtrlInfo.Availability = Availability.Available Then Return End If Me.Ctrl = ControllerFactory.CreateFrom(CtrlInfo) End If If Me.Ctrl Is Nothing Then Return ’ Codesample Dim rd As ABB.Robotics.Controllers.RapidDomain.RapidData = Nothing Ctrl.Logon(myUserInfo.DefaultUser) Dim master As Mastership = Mastership.Request(Me.Ctrl.Rapid) Try rd = Ctrl.Rapid.GetRapidData(tbTask.Text, tbModule.Text, tbValue.Text) If rd = Nothing Then Return End If RichTextBox1.Clear() RichTextBox1.Text = rd.Value.ToString Catch ex As Exception RichTextBox1.Clear() RichTextBox1.Text = ex.ToString Finally If Not rd Is Nothing Then rd.Dispose() rd = Nothing End If End Try Ctrl.Logoff() End Sub /Ari. ---
**Author:** ![Tedenljung](https://avatars.discourse-cdn.com/v4/letter/t/45deac/32.png) [@Tedenljung](https://tech-community.robotics.abb.com/u/Tedenljung)\ **Post date:** [September 13, 2007, 1:40pm UTC](https://tech-community.robotics.abb.com/t/help-plz-don-t-find-what-s-wrong/1416/6 "2007-09-13T13:40:49Z")
Do you have to logon to the controller both for Reading and writing values to controller? In the samples in RAB 5.09 manual no login is done for reading… I think that ABB should check the samples so they really work. Couse it will be a really good help to beginners. ---
**Author:** ![Danny\_Rus](https://avatars.discourse-cdn.com/v4/letter/d/c0e974/32.png) [@Danny\_Rus](https://tech-community.robotics.abb.com/u/Danny_Rus)\ **Post date:** [September 20, 2007, 4:23pm UTC](https://tech-community.robotics.abb.com/t/help-plz-don-t-find-what-s-wrong/1416/7 "2007-09-20T16:23:56Z")
You dont need to take mastership, but you need to be logged on to the controller.