Loading an image slider into a blank movie clip on main stage

[SIZE=1]Im trying to load an external swf[/SIZE][SIZE=1] into a blank movie clip which is on the main stage of my movie. The swf I want to load uses a dynamic image slider to view images. The code I have applied to the first frame of the image slider swf is as follows:[/SIZE]

[SIZE=1]stop();[/SIZE]
[SIZE=1]_root.imagewidth = 495;[/SIZE]
[SIZE=1]_root.speed = 3;[/SIZE]
[SIZE=1]_root.trig.xposnew = -(_root.imagewidth);[/SIZE]
[SIZE=1]but1.onRelease = function() {[/SIZE]
[SIZE=1]_root.trig.xposnew = -(_root.imagewidth);[/SIZE]
[SIZE=1]};[/SIZE]
[SIZE=1]but2.onRelease = function() {[/SIZE]
[SIZE=1]_root.trig.xposnew = -((_root.imagewidth)*2);[/SIZE]
[SIZE=1]};[/SIZE]
[SIZE=1]but3.onRelease = function() {[/SIZE]
[SIZE=1]_root.trig.xposnew = -((_root.imagewidth)*3);[/SIZE]
[SIZE=1]};[/SIZE]
[SIZE=1]};[/SIZE]

[SIZE=1]The slider movie works fine when previewed from the fla file, but when[/SIZE][SIZE=1] the image slider movie clip is loaded as an external swf file it does not work. The buttons do not activate the slider movie.[/SIZE]

[SIZE=1]Hope that makes sense.[/SIZE]

[SIZE=1]Can anyone help?[/SIZE]

[SIZE=1]Many thanks.[/SIZE]