Rotation Problem

Hi, I am really having trouble with this SetTransform and GetTransform thing.The following is partial of my code, and it echos weriod huge numbers....yet i have no clue why...please help. Thanks a lot.

This code suppose to detect the bubble(ShapeName)'s position, and rotate the FishShooter(ShapeName) accordingly, the AngleCaculation() is based on 3d triangle calculation.

I don't quite understand how the setTransform and GetTransform work, like what kind of data they return, and how should I get the following code work!!!!

THanks.

function FishShooter::Rotation()
{
%fishShooter = $fishShooter;
%bubble = $bubble;
//%pi = 3.1415926
//FS = FishShooter, B = Bubble
%FSPosition = %fishShooter.getTransform();
%lxfs = getword(%FSPosition,0); // first, get the current transform values of the fishShooter
%lyfs = getword(%FSPosition,1);
%lzfs = getword(%FSPosition,2);
%rxfs = getword(%FSPosition,3);
%ryfs = getword(%FSPosition,4);
%rzfs = getword(%FSPosition,5);
%rdfs = getword(%FSPosition,6);

%BPosition = %bubble.getTransform();
%lxb = getword(%BPosition,0); // first, get the current transform values of bubble
%lyb = getword(%BPosition,1);
%lzb = getword(%BPosition,2);
%rxb = getword(%BPosition,3);
%ryb = getword(%BPosition,4);
%rzb = getword(%BPosition,5);
%rdb = getword(%BPosition,6);

%rxnew = AngleCalculation(%lzfs, %lyfs, %lzb, %lyb, %rxfs);
%rynew = AngleCalculation(%lxfs, %lzfs, %lxb, %lzb, %ryfs);
%rznew = AngleCalculation(%lxfs, %lyfs, %lxb, %lyb, %rzfs);
%rd = 1;

//%fishShooter.setTransform(%lxfs SPC %lyfs SPC %lzfs SPC %rd SPC 0 SPC 0 SPC %rxnew);
//%fishShooter.setTransform(%lxfs SPC %lyfs SPC %lzfs SPC 0 SPC %rd SPC 0 SPC %rynew);
%fishShooter.setTransform(%lxfs SPC %lyfs SPC %lzfs SPC %rxnew SPC %rynew SPC %rznew SPC %rd);

echo(%lxfs SPC %lyfs SPC %lzfs SPC %rxfs SPC %ryfs SPC %rzfs SPC %rdfs);
}

function AngleCalculation(%lx1, %ly1, %lx2, %ly2, %rz)
// I am assuming getTransform gives me radian value, but it doesn't seem all right
{
%rx = (mAtan((%ly2-%ly1),(%lx2-%lx1))); //get the radian value that it should be rotated
%rz = (%rz + %rx)*57.296; // 57.296 is the constant got from 180/pi
return %rz;
}