Run-time error -17306 in plugin result

[Chakib11]

Hello all, 

I have developed a sequence in which I record several results in the report.

But sometimes I get this error at the end of the test, when I run the result processor

I can't figure out what the bug is because the error appears unpredictably and sometimes it doesn't even appear

I attach a screenshot to this message

any clarification is welcome.

Thanks.

Chakib,

[Chakib11]

For more details, 

I record my results using additionnal result. 

Below, the step wich causes the error 

the step above calls this : 

error : 

I tried to find "TS.StepType" Manually you can see the screenshoot below :

I don't understand why the software tells that he can't access to StepType above but I can find it manually !