PokerTracker

Hey guys, I was wondering if you could help me fix a problem with my graph statistics.

Instead of it showing a hand by hand result on the graph, it's only showing me the following..

[ img ]

how do i fix this please?

That suggests that the currency exchange rate wasn't set correctly during the import. (We have an issue which can cause this fixed for the next release.)
Go to Database > Currency and select the session(s) affected and click 'Set Rates' with the 'automatic' option ticked.

Another thought - did you play Play Money hands for the flat portion of the graph? That would be converted to zero "My Currency" because it isn't worth anything.