MEL: Transform polySplitRing to the middle

// window - GUI
{
    string $window = `window -t "Az' Automated SplitEdgeRing"`;
    rowColumnLayout;
        floatFieldGrp -label "< 0.5" -precision 3 greaterThan;
    floatFieldGrp -label "> 0.5" -precision 3 smallerThan;
        button -l "Center" -command "funcChangeWeight(1)";
    button -l "Non-Center" -command "funcChangeWeight(0)";
    showWindow $window;
}

proc funcChangeWeight(int $justCenter)
{
    // declare an array called $polySplitRings. Call ls to list
    // all the polySplitRings in the scene
    $polySplitRings = `ls -et polySplitRing`;

    if ($justCenter == 1)
    {
        //print "just Center \n"; // debug: show that the button was clicked
        // loop through the array and set the weight to .5
        for( $polySplitRing in $polySplitRings )
        {
            select -addFirst $polySplitRing ;
            setAttr ($polySplitRing + ".weight") .5;
            select -d $polySplitRing;
        }
    }
    else
    {
        //print "Do not center \n"; // debug: show that the button was clicked
        float $greaterThan = `floatFieldGrp -q -v1 greaterThan`;
        float $smallerThan = `floatFieldGrp -q -v1 smallerThan`;
        // loop through the array and set the weight to $greaterThan or $smallerThan
        for( $polySplitRing in $polySplitRings )
        {
            float $fWeight = getAttr ($polySplitRing + ".weight");
            //print ($fWeight + "\n"); // debug: show current weight attribute
            select -addFirst $polySplitRing ;
            if ($fWeight < 0.5)
            {
                setAttr ($polySplitRing + ".weight") $smallerThan;
            }
            else
            {
                setAttr ($polySplitRing + ".weight") $greaterThan;
            }
            select -d $polySplitRing;
        }
    }
}