Hi Jason:
Thanks for your reply. Here is the output I get:
&
AMT=24&
CURRENCYCODE=EUR&
PROFILESTARTDATE=2016-10-26T0:0:0&
BILLINGPERIOD=Year&
BILLINGFREQUENCY=1&
AUTOBILLAMT=AddToNextBilling&
L_BILLINGTYPE0=RecurringPayments&
DESC=Paypal+%28Cuota+b%C3%A1sica%29+at+Alumni&
NOTIFYURL=XXXXX
NOSHIPPING=1&
L_BILLINGAGREEMENTDESCRIPTION0=Paypal+%28Cuota+b%C3%A1sica%29+at+Alumni&
L_PAYMENTTYPE0=Any&
ReturnUrl=XXXXX
CANCELURL=XXXX
SOLUTIONTYPE=Sole&
LANDINGPAGE=Billing
Thanks and kind regards.