- my @hidden_vars = ('filter', map { ('cvar_'. $_->{name} , 'l_cvar_'. $_->{name}) } @includeable_custom_variables);
+ my @hidden_vars = (
+ 'filter',
+ map({ ('cvar_'. $_->{name} , 'l_cvar_'. $_->{name}) } @includeable_custom_variables),
+ map({'cvar_'. $_->{name} .'_qtyop'} grep({$_->{type} eq 'number'} @searchable_custom_variables)),
+ );