} elsif ( $tagslib->{$tag}->{$subfield}->{value_builder} ) {

					# opening plugin

					my $plugin = C4::Context->intranetdir . "/cataloguing/value_builder/" . $tagslib->{$tag}->{$subfield}->{'value_builder'};

					my $id = "tag_".$tag."_subfield_".$subfield;

					my $attributes = " id=\"$id\" type=\"text\" name=\"field_value\" value=\"$defaultvalue\" size=\"50\" maxlength=\"255\" ";

					if (do $plugin) {

						my $temp;

						my $loop_data;

						my $random = int(rand(1000000));

						my $extended_param = plugin_parameters( $dbh, $temp, $tagslib, $id, $loop_data );

						my ( $function_name, $javascript ) = plugin_javascript( $dbh, $temp, $tagslib, $id, $loop_data );

						my $change = index($javascript, 'function Change') > -1 ?

						"return Change$function_name($random, '$id');" :

						'return 1;';

						$subfield_data{marc_value} = qq[<input $attributes

						onfocus="Focus$function_name($random, '$id');"

						onchange=" $change"

						 onblur=" Blur$function_name($random, '$id');" />

						<a href="#" class="buttonDot" onclick="Clic$function_name('$id'); return false;" title="Tag Editor">...</a>

						$javascript];

					} else {

						warn "Plugin Failed: $plugin";

						$subfield_data{marc_value} = "<input $attributes />"; # supply default input form

					}