bedrock.hier.create.fromattribute process not working properly with default params

[nicolasbisurgi]

Describe the bug
}bedrock.hier.create.fromattribute fails when both pSrcHier and pTgtHier are empty.
These parameters are both flagged as optionals and they both have empty default values. I run the same process with a value inside pTgtHier and it works perfect.

To Reproduce
Steps to reproduce the behavior:

4048   [1c7]   INFO   2023-09-07 06:24:57.277   TM1.Process   Process "set_virtual_hierarchies" executed by user "Admin"
4048   [1c7]   INFO   2023-09-07 06:24:57.278   TM1.Process   Process "}bedrock.hier.create.fromattribute" run from process "set_virtual_hierarchies" by user "Admin"
4048   [1c7]   INFO   2023-09-07 06:24:57.281   TM1.TILogOutput   Process:}bedrock.hier.create.fromattribute run with parameters pDim:location, pSrcHier:, pTgtHier:, pAttr:Region, pTopNode:WorldWide, pPrefix:, pSuffix:, pSkipBlank:     0.000, pUnallocated:Undefined <pAttr>.
4048   [1c7]   ERROR   2023-09-07 06:24:57.281   TM1.TILogOutput   User:Admin Process:}bedrock.hier.create.fromattribute ErrorMsg:Source and target Herarchy can not be the same
4048   [1c7]   ERROR   2023-09-07 06:24:57.281   TM1.Process   Process "}bedrock.hier.create.fromattribute": : Execution was aborted by ProcessQuit Function.
4048   [1c7]   ERROR   2023-09-07 06:24:57.284   TM1.Process   Process "set_virtual_hierarchies":  finished executing with errors. Error file: <TM1ProcessError_20230907062457_28104048_set_virtual_hierarchies.log>

Expected behavior
When adding a value for the target hierarchy:

1556   [1c7]   INFO   2023-09-07 06:25:54.647   TM1.Process   Process "set_virtual_hierarchies" executed by user "Admin"
1556   [1c7]   INFO   2023-09-07 06:25:54.648   TM1.Process   Process "}bedrock.hier.create.fromattribute" run from process "set_virtual_hierarchies" by user "Admin"
1556   [1c7]   INFO   2023-09-07 06:25:54.651   TM1.TILogOutput   Process:}bedrock.hier.create.fromattribute run with parameters pDim:location, pSrcHier:, pTgtHier:Region, pAttr:Region, pTopNode:WorldWide, pPrefix:, pSuffix:, pSkipBlank:     0.000, pUnallocated:Undefined <pAttr>.
1556   [1c7]   INFO   2023-09-07 06:25:54.662   TM1.TILogOutput   Process:}bedrock.hier.create.fromattribute successfully created the Region hierarchy in the location dimension.
1556   [1c7]   INFO   2023-09-07 06:25:54.662   TM1.Process   Process "}bedrock.hier.create.fromattribute":  finished executing normally, elapsed time 0.01 seconds
1556   [1c7]   INFO   2023-09-07 06:25:54.662   TM1.Process   Process "set_virtual_hierarchies":  finished executing normally, elapsed time 0.01 seconds

Screenshots
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Version

• OS: [e.g. Windows Server 2106]
• TM1 Server Version: [e.g. 11.4]

Additional context
Add any other context about the problem here.

[lotsaram]

Agree this is a bug (minor one). Would be fixed by changing
IF( Trim ( pSrcHier ) @= Trim ( pTgtHier ));
to
IF( Trim ( pSrcHier ) @= Trim ( pTgtHier ) & pTgtHier @<>'');