How to pass variables in post-deployment script

[testlab9000]

How can I pass a variable in the DACPAC post-deployment script with xDatabase?
For example in the following post-deployment script:
EXEC ('ALTER DATABASE [$(DatabaseName)] MODIFY FILE (NAME = [$(DatabaseName)], SIZE = 100MB, MAXSIZE = UNLIMITED, FILEGROWTH = 20%)');

I can pass $(DatabaseName) by referencing it in

        {
            Ensure = 'Present'
            SqlServer = 'localhost'
            SqlServerVersion = '2014'
            DatabaseName = $DatabaseName
            Credentials = $Credential
            DacPacPath =  'C:\DatabaseTest.dacpac'
            DacPacApplicationName =  $DatabaseName
            DacPacApplicationVersion =  '1.0'
        }

But how can I pass $(databaseSizeSQLCMD) in the following script?
EXEC ('ALTER DATABASE [$(DatabaseName)] MODIFY FILE (NAME = [$(DatabaseName)], SIZE = $(databaseSizeSQLCMD), MAXSIZE = UNLIMITED, FILEGROWTH = 20%)');

[johlju]

It doesn't seem possible to run post-deployment scripts with the current implementation. Maybe new properties in the schema is needed to handle this.