Can't make an independent zombie

[TechedRonan 0]

I'm trying to create zombie sieges on a base but the zombies won't spawn unless they are put on west side and I need them on the independent side for the soldiers to attack them.

This doesn't work:

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">_zgroup = createGroup resistance;

"NeM_Zombie_1" createUnit [getMarkerPos "base_zombieattack", _zgroup];

This does however but isn't what I want:

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">_zgroup = createGroup west;

"NeM_Zombie_1" createUnit [getMarkerPos "base_zombieattack", _zgroup];

Also how do I spawn a certain amount of them at random positions within a markers radius?

And are there any good tutorials for making Dialogs?

(I'm using Crappy Zombie Mod. Get it here)