Use Parameter Value in Target XML file Name

Dear All,

I am passing a parameter value (job_run_id()), to a dataflow, where i want to use it along with the name of the XML target file but i am not able to include the same,

Now i have an option to pass the entire path in a parameter including the job_run_id,

but i want to use it seperately,

Currently i am passing the path to XML target using substitution parameter as below:

[$$SharePathMasterTables]\sp.xml

my intention is to use a Job run id along with file name so that separate file is created in every job run like:

<File_Location>\sp_17cc26f4981111e59254b2c06640942b.xml

Please share your valuable suggestions on this.

Regards,

Jayant