There two "<select multiple" code blocks in the page, and the code above is for them. The code in the page source for those blocks is below: (In this one, I want to select SNP)

 <SELECT MULTIPLE="multiple" NAME="polymorphismType" SIZE="5">
         <OPTION value="" selected="selected">ANY</OPTION>
            <OPTION VALUE='1878510'>SNP</OPTION>
<OPTION VALUE='1878511'>IN-DEL</OPTION>
<OPTION VALUE='1878512'>Named</OPTION>
<OPTION VALUE='1878513'>Mixed</OPTION>
<OPTION VALUE='1878514'>MNP</OPTION>

          </SELECT>
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And in the next one, I want to select "coding-non synonymous"

 <SELECT MULTIPLE="multiple" SIZE="5" NAME="functionClass">
            <OPTION value="" selected="selected">ANY</OPTION>
         <OPTION VALUE='1878486'>Coding-NonSynonymous</OPTION>
<OPTION VALUE='1878487'>Coding-Synonymous</OPTION>
<OPTION VALUE='1878489'>Intron</OPTION>
<OPTION VALUE='1878490'>Locus-Region</OPTION>
<OPTION VALUE='1878493'>mRNA-UTR</OPTION>
<OPTION VALUE='1878494'>Splice-Site</OPTION>

          </SELECT>
[download]

So the code for the making the selections is written below, but I don't know if it is right or not

$variation='polymorphismType';
$varvalue=("1878510");
$func_class='functionClass';
$funcvalue='1878486';

$moz->select($variation,$varvalue);

$moz->select($func_class,$funcvalue);
[download]

THANK YOU FOR YOUR PATIENCE.