Creating a custom launcher for Starcraft 2 in Gnome 3

Question

So I have Starcraft 2 installed via PlayOnLinux on my computer. Now I wanted to make a custom launcher to Gnomes dock under the Games category. My sc2.desktop looks like this:

[Desktop Entry]
Name=Starcraft 2
Exec=/home/kaspar/.PlayOnLinux/wineprefix/SC2_WoL/drive_c/'Program Files'/'StarCraft II'/'Starcraft II.exe' -wine
Icon=/home/kaspar/Pictures/.icons/sc2.png
Type=Application
Categories=Game;

So my question is here now, how do I get it to launch with the wine version PlayOnLinux installed for it and all the settings also. -wine in the end of the line makes it run with the stable wine version with which SC2 is very well... buggy.