2 ISP on Mikrotik RB2011UiAS

Hello everyone.

I have configured a PPTP Server on my MikroTik with 6.38.1 (stable). There are 2 ISP links connected to him.

PPTP SUBNET: 192.168.1.1
ISP1: 1.1.1.2/30 DNS: 5.5.5.5
ISP2: 2.2.2.2:30 DNS: 6.6.6.6

When the clients will connect by PPTP i want to pass all their traffic through ISP 1 to the INTERNET.
Only for my IP 192.168.1.5 I want to pass all the trafficby ISP 2.
Is it possible, if yes, how? Thanks.