GraphWaveDraw and Igor 7

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We have this piece of code in our procedures that take the freehand drawing for further processing somewhere else (the waves will be overwritten directly in the :viewer: folder ). The code worked fine on Igor 6 , on Igor 7 I get the the error : "While executing ImageLineProfile, the following error occurred: One or more of the input waves are not supported". I tried to add Redimension/D to see if it's a wave type that is the problem but it didn't work.

Function PVBDrawImNewLineProfileProc(ctrlName) : ButtonControl
string ctrlname
    String cdf=GetDataFolder(1)
    PVBImNewLineProfileProc(ctrlName)
    setdatafolder root:WinGlobals:viewer
   
    SVAR imageGraphName= root:Packages:PVBImProcess:LineProfile:imageGraphName
    Wave FHLineProfileY= root:WinGlobals:$(imageGraphName):FHLineProfileY
    Wave FHLineProfileX= root:WinGlobals:$(imageGraphName):FHLineProfileX
   
   

    Graphwavedraw/F/O  FHlineprofileY, FHlineprofileX
    SetDataFolder cdf
    PVBSetFHDependency()
end