Call parameters in Powershell script in Jenkins - powershell

Question

I need to run a powershell script in a function called by Jenkins. When calling this function, two other parameters/variables are included. This is a sample of my code:
powershell '''
$Headers = #{"ApiKey"="$env:myKey"}
$jsonBody = #{
varOne= '$env:params.varOne'
varTwo = '$env:params.varTwo'} | ConvertTo-Json -Depth 10
Invoke-RestMethod -Method Post -Uri "myUrl" -Headers $Headers -Body $jsonBody
'''
This is throwing a 'Bad Response' error. Note that if I hard code the values that are in the variable, the script works.
I also try to wrap the script with withEnv but I got the same issue:
withEnv(["varOne=${params.varOne}, varTwo=${params.varTwo}"]) {
powershell '''
$Headers = #{"ApiKey"="$env:myKey"}
$jsonBody = #{
varOne= '$env:params.varOne'
varTwo = '$env:params.varTwo'} | ConvertTo-Json -Depth 10
Invoke-RestMethod -Method Post -Uri "myUrl" -Headers $Headers -Body $jsonBody
'''
}
Finally, I know I could call these variables successfully if I was using double quote instead of single ones
powershell """
some ps1 script
"""
However, when I do that it says:
groovy.lang.MissingPropertyException: No such property: Headers

Answer 1

If you're going to template variables you need """ as I said in the question you deleted, but you need to escape the $ on non templated variables
powershell """
\$Headers = #{"ApiKey"="$env:myKey"}
\$jsonBody = #{
varOne= '$env:params.varOne'
varTwo = '$env:params.varTwo'} | ConvertTo-Json -Depth 10
Invoke-RestMethod -Method Post -Uri "myUrl" -Headers \$Headers -Body \$jsonBody
"""