What is the meaning of positive Max DD?

 
I am a newbies. As i understand drawdown is sufferred loss. I think it should be -ve.  but i saw that some are +ve in signal provider. What is that mean?
 

mql5.com checks for signal drawdown once per minute, or something like that. Signal provider can have trades that always go to profit, then mql5 will not be able to catch negative profit.

1) Signal provider opens a trade

2) after 10 - 20 seconds trade already reached positive profit

3) mql5.com checks for current drawdown, and saves current positive value

Reason: