A VTLIB way to add values to an existing picklist

[Guido1982]

I'm updating one of my modules, and I'd like to add some values to one of the picklists. Is that as simple as:

PHP Code:

            // Setup the field
            $invoicePaymentCondField                =    new Vtiger_Field();
            $invoicePaymentCondField->name            =    'existing_name';
            $invoicePaymentCondField->label            =    'Label';
            $invoicePaymentCondField->table            =    'existing_table';
            $invoicePaymentCondField->column        =    'existing column';
            $invoicePaymentCondField->columntype    =    'VARCHAR(100)';
            $invoicePaymentCondField->uitype        =    16;
            $invoicePaymentCondField->typeofdata    =    'V~M';
            $invoiceDescriptionBlock->addField($invoicePaymentCondField);        
            
            $invoicePaymentCondField->setPicklistValues( array('Existing values with new values') ); 


Or is there a special method for this?