You need to use auto-aim code for that.

Set names for Latitude, Longitude, Altitude, Pitch and Roll angles (you already have heading angle; set them with sometthing short like Zbomb - Latitude, Xbomb - Longtude, Ybomb - Altitude and so on) in variable output of bomb-mounted computer.
Then you set variables
TgtposX

 sin(TargetHeading)*abs(cos(TargetElevation))*TargetDistance+Xbomb

TgtposZ

 cos(TargetHeading)*abs(cos(TargetElevation))*TargetDistance+Zbomb

TgtposY

 sin(TargetElevation)*TargetDistance+Ybomb

HbombX

 cos(-Rbomb)*(cos(-Hbomb)*((TgtPosX-Xbomb))+sin(-Hbomb)*((TgtPosZ- 
 Zbomb)))+-sin(-Rbomb)*(cos(Pbomb)*((TgtPosY-Ybomb))+-sin(Pbomb)*(-sin(- 
 Hbomb)*((TgtPosX-Xbomb))+cos(-Hbomb)*((TgtPosZ-Zbomb))))

HbombZ

sin(Pbomb)*((TgtPosY-Ybomb))+cos(Pbomb)*(-sin(-Hbomb)*((TgtPosX- 
Xbomb))+cos(-Hbomb)*((TgtPosZ-Zbomb)))

HbombY

 sin(-Rbomb)*(cos(-Hbomb)*((TgtPosX-Xbomb))+sin(-Hbomb)*((TgtPosZ-Zbomb)))+cos(-Rbomb)*(cos(Pbomb)*((TgtPosY-Ybomb))+-sin(Pbomb)*(-sin(-Hbomb)*((TgtPosX-Xbomb))+cos(-Hbomb)*((TgtPosZ-Zbomb))))

And the last one:
Hbomb

 ((TargetSelected)?clamp(repeat(atan(HbombX/HbombZ)+(sign(HbombZ)? 
 0:180)+180,360)-180,-180,180)/1:0) 

Should work.

Never mind, TargetHeading is the problem. It depends on the main cockpit's position. Now I have to find a solution. I have target coordinates and bomb coordinates. I have to use these to get a bearing to target. Thanks for stopping by by the way.