powershell json format variable in tmsl script - json

Question

I use powershell and i want to put variable in json format into TMSL create role script. I want to put this variable into TablePermission parameter
json variable:
$filter=
[
{
"name": "DimGeography",
"filterExpression": "DimGeography[CountryRegionCode] = \"US\" "
}
]
TMSL script:
$Query='
{
"create": {
"parentObject": {
"database": "AW Internet Sales"
},
"role": {
"name": "test_filter",
"modelPermission": "read",
"tablePermissions": "'+$filter+'"
}
}
}'
This is script which I want to parametrize
{
"createOrReplace": {
"object": {
"database": "AW Internet Sales",
"role": "SalesManagerUS"
},
"role": {
"name": "SalesManagerUS",
"modelPermission": "read",
"tablePermissions": [
{
"name": "DimGeography",
"filterExpression": "DimGeography[CountryRegionCode] = \"US\" "
}
]
}
}
}
How can I put $filter to $Query to receive working script like above ?

Answer 1

You could try the below snippet :
$filter=
'[
{
"name": "DimGeography",
"filterExpression": "DimGeography[CountryRegionCode] = \"US\" "
}
]'
function populate-tsml ($filter)
{
$Query='
{
"create": {
"parentObject": {
"database": "AW Internet Sales"
},
"role": {
"name": "test_filter",
"modelPermission": "read",
"tablePermissions": '+$filter+'
}
}
}'
return $Query
}
$Query = populate-tsml -filter $filter
OUTPUT :

Answer 2

Thank you!
It wasn't necesseary to define a function, a little changes in quotation marks was enough.
Script below works:
$filter=
'[
{
"name": "DimGeography",
"filterExpression": "DimGeography[CountryRegionCode] = \"US\" "
}
]'
$Query='
{
"create": {
"parentObject": {
"database": "AW Internet Sales"
},
"role": {
"name": "test_filter",
"modelPermission": "read",
"tablePermissions": '+$filter+'
}
}
}'