Issue with hierarchy browser tree component

Hello,

While implementing a hierarchy browser tree component.

For any value in the pathValue parameter , I am getting the below error stating the nextLevelValues as dot (.)

I tried getting the values from a rule, using a function and even hard coded my nextLevelValues but facing the same error in all cases.

Rule and function are returning the data properly when used individually

PFB the error

Could not display interface. Please check definition and inputs. Interface Definition: Expression evaluation error at function a!hierarchyBrowserFieldTree [line 3]: A tree browser component [label=“Configured Work Flow”] has an invalid value for “pathValue”. “pathValue” at index 2 must be in the “nextLevelValues” generated using “pathValue” at index 1. “pathValue” at index 2 was [TaskDecisionID=2, ProgramMasterID=, TaskStepID=3, Disposition=1, IsActive=1, CreatedBy=, CreatedDtTm=8/6/2020 4:15 PM GMT+05:30, UpdatedBy=, UpdatedDtTm=8/6/2020 4:15 PM GMT+05:30], but the “nextLevelValues” for index 1 were .