Graphic economic data from the economic calendar

Hello. I need to graph the economic data (from economic calendar) in MT4. In graphic (like any other idicator like CCI, momentum and other).

What I am looking for is the code for one of these dates, and a part in the code for I can change to the dara I am interest in the momento (a note of something like that that tell me what part I need to sucstitute for the indicator represent other economic data: example, a part in an specific area of the code say IPC, and I only need to change to GDP, or what ever is the name for this). In this way is more confort for make the indicator and is more usefull for me. 

Can someone hep me with this?

Thanks

trader201