Azure DevOps pipeline template - how to concatenate a parameter

Question

All afternoon I have been trying to get my head around concatenating a parameter in an ADO template. The parameter is a source path and in the template a next folder level needs to be added. I would like to achieve this with a "simple" concatenation. The simplified template takes the parameter and uses it to form the inputPath for a PowerShell script, like this:

parameters:
  sourcePath: ''

steps:   
- task: PowerShell@2
  inputs:
    filePath: 'PSRepo/Scripts/MyPsScript.ps1'
    arguments: '-inputPath ''$(sourcePath)/NextFolder''

I have tried various ways to achieve this concatenation:

• '$(sourcePath)/NextFolder'
  • see above
• '$(variables.sourcePath)/NextFolder'
  • I know sourcePath is not a variable, but tried based on the fact that using a parameter in a task condition it apparently only works when referencing through variables
• '${{ parameters.sourcePath }}/NextFolder'

And some other variations, all to no avail. I also tried to introduce a variables section in the template, but that is not possible.

I have searched the internet for examples/documentation, but no direct answers and other issues seemed to hint to some solution, but were not working.

I will surely be very pleased if someone could help me out.

Thanx in advance.

Answer 1

Thanx, Yujun. In meantime did get it working. Apparently there must have been some typo that did block the script from executing right as the se solution looks like one of the options mentioned above.

parameters:
  sourcePath: ''

steps:   
- task: PowerShell@2
  inputs:
    filePath: 'PSRepo/Scripts/MyPsScript.ps1'
    arguments: '-inputPath ''$(sourcePath)/NextFolder''