oops -- need to check isValue not isParser

Author: mgage

macros/PGmatrixmacros.pl

@@ -768,7 +768,7 @@ =head2 convert_to_array_ref {
 
 sub convert_to_array_ref {
 	my $input = shift;
-	if (Value::isParser($input) and Value::classMatch($input,"Matrix")) {
+	if (Value::isValue($input) and Value::classMatch($input,"Matrix")) {
 		$input = [$input->value];
 	} elsif (ref($input) eq 'Matrix' ) {
 		$input = $input->array_ref;