[xsl] If no parameters,then what should be sent

Hi all,

This is my code.What should I pass if I don't have any value to pass?
Should I pass blank value because not including parameter gives me error.

if($in{'flag'} eq "2") {
            my $results = $stylesheet->transform($source, args  =>
"'$in{'args'}'",val => "'1'",cnt => "' '",idx => "' '",sidx => "' '",
new => "' '");
            print $stylesheet->output_string($results);
}else{
            my $results = $stylesheet->transform($source, args => "'
'",val => "'2'",cnt => "'$in{'cnt'}'",idx => "'$in{'idx'}'",sidx =>
"'$in{'sidx'}'",new => "'$in{'new'}'");
            print $stylesheet->output_string($results);
}

btw,what is the meaning of this error,

Unfinished literal
runtime error
Evaluating user parameter cnt failed

means variable 'cnt' is passed though it is not exising?
----------------------------
Regards,
Himanshu Padmanabhi

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