HOW TO CHANGE THE FONT AND TEXT SIZE OF TEXT INSIDE A TABLE.

Dear Experts.

I am having a document file which contains a word file (IMPORTED). The File is having a lot of Tables inside it. What i am trying to do is i want to change the FONT and TEXT SIZE of content inside the TABLE. Please see the below  Code what i have written so far. Since i am new to FM Scripting i am facing few issues in my code. Please guide me to solve this issue.

#target framemaker 

main ();

function main () {

    var doc = app.ActiveDoc;

    if (doc.ObjectValid () === 1) {

        processDoc (doc);

    }

    else {

        alert ("There is no active doc.");

    }   

}

function processDoc (doc) {

    var tbl = doc.FirstTblInDoc;

    while (tbl.ObjectValid () ) {

       var text = tbl.GetText(Constants.FTI_String) ;

       var text1 = new TextRange() ;

       text1.beg.obj = text1.end.obj = text ;

       applyFontToTbl(text_range)

        }

        tbl = tbl.NextTblInDoc;

        doc.Redisplay ();

}

applyFontToTbl(text_range, "Calibri");

function applyFontToTbl(text_range, fontName)

{

     var fontFamilyNames = app.FontFamilyNames;

    for(var i = 0; i < fontFamilyNames.length; i++)

    {

        if(fontFamilyNames[i] == fontName) break;

    }

    if(i == fontFamilyNames.length)

    {

        alert("Could not find the specified font, " + fontName);

        return;

    }

    props = AllocatePropVals(1);

    props[0].propIdent.num = Constants.FP_FontFamily;

    props[0].propVal.valType = Constants.FT_Integer;

    props[0].propVal.ival = i;   

}

With RegardsAghil.M