I have a plastic client installed on the jenkins agent and wanted to use the mergebot shelve but came across this issue, what I ended up doing was doing the "merge to a shelve" in the agent itselfe
this is the groovy sintax to do that
def shelveId = powershell(script: '''
$branchName = ''' + "'${env.PLASTICSCM_MERGEBOT_BRANCH_NAME}'" + '''
$mergeOutput = cm merge br:/$branchName --to=br:/main --merge --shelve
$Pattern = 'sh:(.*?) '
Write-Host $mergeOutput
$shelveId = (([regex]::Matches($mergeOutput, $Pattern)).Groups | Where-Object {$_.Name -eq '1'}).Value
return $shelveId
''', returnStdout: true).trim()
echo "Shelve ID: ${shelveId}"
// Apply the shelve to the workspace
bat "cm shelveset apply sh:${shelveId}"
hope this helps anyone that come cross this
