Execute script containg sql agent token through SQLCmd

I have simplified my issues so that it can be reprod by anyone . 

I have a sql agent job with powerhsell step with below code -

$sqlInstance = "$(ESCAPE_DQUOTE(SRVR))"
$sql_conn = New-Object system.Data.SqlClient.SqlConnection
$sql_conn.ConnectionString = "Data Source=$sqlInstance;Integrated Security=true;Initial Catalog=master;"
$sql_conn.Open()
$cmd = new-Object System.Data.SqlClient.SqlCommand
$cmd.connection = $sql_conn

$cmd.CommandText= " select 1 "

$cmd.executenonquery()
$sql_conn.Close()

I scripted out the above job and wanted to deploy using SQLCmd

sqlcmd -SMyServer -i "C:\Temp\testjob.sql"

I get below error in SQLCMD executin window - 'SRVR' scripting variable not defined. But job gets created though with below code -

(note the missing ESCAPE_DQUOTE in $sqlInstance = "$((SRVR))" )

$sqlInstance = "$(SRVR)"
$sql_conn = New-Object system.Data.SqlClient.SqlConnection
$sql_conn.ConnectionString = "Data Source=$sqlInstance;Integrated Security=true;Initial Catalog=master;"
$sql_conn.Open()
$cmd = new-Object System.Data.SqlClient.SqlCommand
$cmd.connection = $sql_conn

$cmd.CommandText= " select 1 "

$cmd.executenonquery()
$sql_conn.Close()

The created job fails complaining on missing ESCAPE_xxx macro.

 As suggested in one of the posts If I remove the script file - $ before (ESCAPE_DQUOTE(SRVR))

Job gets created with

$sqlInstance = "(ESCAPE_DQUOTE(SRVR))"