Help with some movie clips and an function...

Question

Hi all..
I`m having trouble with an function used to animate two movie
clips....
I want to use the function like this " fSwitch("movie1",
"movie2"); "
I`ve checked to see if I had typoes but I don`t and the
scripting looks good to me...
In spite of this fact , when I test the code or movie i get
this erros :
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 32:
There is no property with the name '_x'.
sItem2._x = 10;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 33:
There is no property with the name '_y'.
sItem2._y = 10;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 34:
There is no property with the name '_xscale'.
sItem2._xscale = 10;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 35:
There is no property with the name '_yscale'.
sItem2._yscale = 10;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 36:
There is no property with the name '_alpha'.
sItem2._alpha = 0;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 37:
There is no property with the name '_y'.
while(sItem2._y <= Stage.height/2 -1) {
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 38:
There is no property with the name '_alpha'.
if(sItem2._alpha <= 97) {
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 39:
There is no property with the name '_alpha'.
sItem2._alpha += 3;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 40:
There is no property with the name '_alpha'.
sItem1._alpha -= 3;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 42:
There is no property with the name '_x'.
sItem2._x +=2;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 43:
There is no property with the name '_y'.
sItem2._y +=1;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 44:
There is no property with the name '_x'.
sItem1._x +=2;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 45:
There is no property with the name '_y'.
sItem1._y +=1;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 48:
There is no property with the name '_y'.
if(sItem2._y >=98) {
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 50:
There is no property with the name '_xscale'.
sItem2._xscale +=1;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 51:
There is no property with the name '_yscale'.
sItem2._yscale +=1;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 53:
There is no property with the name '_xscale'.
if(sItem2._xscale >= 100) {
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 58:
There is no property with the name '_xscale'.
sItem1._xscale -=1;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 59:
There is no property with the name '_yscale'.
sItem1._yscale -=1;
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 61:
There is no property with the name '_xscale'.
if(sItem1._xscale <=10) {
Total ActionScript Errors: 20 Reported Errors: 20
Please help me out :-<
The code :

Answer 1

sItem2 is a string and strings don't have _x etc properties.
"movie1" should be a movieclip, not a string when passed to
fSwitch() and fSwtich parameter typing should be changed. or
convert "movie1" into a movieclip in fSwitch()
to remedy the issue with sItem2, use a reference to your
movieclip created by attachMovie().
for example: