Adding a variable an instance name

Question

i have a variable that is my flash movie is retreiving (well,
hopefully....i'm having troubles with the
loadVariables)....anyweezer, the variable is named "id". i would
like to add the value of this variable to then end of a text string
and then use it as reference to an instance name.
for example, i have movie clip with an instance name of
TTMO110333. if the ID variable had a value of 110333, how could i
use that in actionscript to allow me to refer to the latter part of
the instance name with the variable?
something to the effect of....
on(rollOver) {
this."TTMO"+id._visible = true;
}

Answer 1

thanks for your help, but neither solution is working for me.
i think it may be because i'm using this in a function for a movie
clip, to make it act as a button. i am also having problems getting
getURL() to open a blank page inside a function for a movie clip
like this as well. is there something i need to do differently if
i'm trying to apply this to a movie clip? here's my AS....
this.loadVariables("linkCCdisplay.php","POST"); //this gets 3
variables: url1, title1, and id1
TTbutton1.onRelease = function() {
TTbutton1.getURL(url1, _blank);
}; //the "blank in this doesn't work, it goes to the url,
just not in a new window
TTMO110333._visible = false; //this refers to a movie clip
that is on the same stage with an instance name of TTMO110333
myInterval = setInterval (TTMO,15);
function TTMO () {
TTMO110333._x -= (TTMO110333._x - _xmouse)/10;
TTMO110333._y -= (TTMO110333._y - _ymouse)/10-2;
TTbutton1.onRollOver = function() {
this["TTMO"+id1]._visible = true;
} //this refers to a movie clip with an instance name of
TTbutton1, i would like to make the clip visible only while the
mouse is over the movie clip i'm trying to get to act as a button
any ideas on how to solve these problems? thanks again for
your time.