20B - GetManager for approval absence if is exists Line manager or Matrix manager

Summary

20B - GetManager for approval absence if is exists Line manager or Matrix manager

Content

Hi Expert ,

Requirement from My Organization to get manager for approval absence if is exists Line Manager or Matrix manager .

I have design approval rule in BPM worklist , use function 

if GetManager("LINE_MANAGER",Task.payload.getRequestorInformationByUserNameResponse.result.requestManager) isn't null

  then get LineManager 

if GetManager("LINE_MANAGER",Task.payload.getRequestorInformationByUserNameResponse.result.requestManager) is null

then get MatrixManager

i check valid and commit is ok, when create absence for employee then we have issue in transaction console. 

Please see enclosed file.

Please help me ,