Obtaining frame forces from Sap2000

I am trying to obtain frame forces from a sap model. I used the code,

[ret, NumberResults,  Obj, ObjSta, Elm, ElmSta, LoadCase, StepType, StepNum, P, V2, V3, T, M2, M3] =AnalysisResults.FrameForce(FrameName1,SAP2000v20.eItemTypeElm.GroupElm, NumberResults, Obj, ObjSta, Elm, ElmSta, LoadCase, StepType, StepNum, P, V2, V3, T, M2, M3)

But got the following error message,

No method 'FrameForce' with matching signature found for class 'SAP2000v20.cAnalysisResults'.

I'll really appreciate if someone can help me with this.

[xie huang xie huang]

Hello, I also met the same problem, may I ask you to solve it? Can you ask me how to solve it? Thank you very much!

Answer 1

[Walter Roberson]

You have to do a lot of explicit type casting.

See https://www.researchgate.net/publication/337200068_SAP2000-MATLAB_Integration_For_Nonlinear_Dynamic_Response_Structural_Optimization

and see https://www.eng-tips.com/viewthread.cfm?qid=466536

[xie huang xie huang]

Sorry, I also used the explicit expression, but I don't know what the problem is, can you help me look at it？