Netsuite : AddFilter(position, reference, type, label, displayType, defaultValue, helpText, source, maxLength) Please enter valid default value error

I’m trying to customise the suitelet of the EFT Bill Payment and set a defaultValue on a filter.

I found this documentation : [https://docs.oracle.com/en/cloud/saas/netsuite/ns-online-help/section_0724095855.html]

here is the code that I try to implement :

const onRequest = (context) => {
try {

            var epPlugin = plugin.loadImplementation({type: "customscript_17239_ep_api_plugin",implementation: "default"});
            var epPaymentSelectionForm = epPlugin.getEPForm(); epPaymentSelectionForm.setPaymentType('EFT');
            epPaymentSelectionForm.setGlobalPayment(false);
            
            //FILTERS 
            epPaymentSelectionForm.AddFilter(true,'custbody18', 'checkbox', 'Block for payment', 'normal', 'T');
            epPaymentSelectionForm.AddFilter(true,'custbody17', 'multiselect', 'Payment Method', 'inline','1,6', '', 'customlist819', '');
        
          
            //COLUMNS
            epPaymentSelectionForm.AddColumn('text', 'Payment Method', 'custbody17'); 
            epPaymentSelectionForm.BuildUI(context);
            var form = epPaymentSelectionForm.GetForm();
            context.response.writePage(form);
            
         } catch (e) {
            log.error("error in loading",e)
        }
    }

    return {onRequest}

});

the error is the following : ‘Invalid value. Please enter valid default value.’ I have already try ‘T’, ‘true’, ‘True’, true none of them work.

Anyone has ever faced this issue ?

Thank you,

The defaultValue is never set neither for the first filter or the second one.