urlread https post website certificate

Here we are again talking about urlread not been able to access a https location. Here my code, trying to access the brazilian Securities and Exchange Commission (CVM). With a simple html code I have success in obtaining the data via post. When I try the 'urlread' function I am not well succeeded. Can anyone help me? I tried even saving the certificate from the cvm website.

cvm1='https://www.rad.cvm.gov.br/download/SolicitaDownload.asp' cvm2={'txtLogin','397dwl0000207','txtSenha','1839D124','txtData','04/04/2007','txtHora','00:00','txtDocumento','RAD','txtAssuntoIPE ','SIM'} [cvmread1,cvmread2]=urlread(cvm1,'post',cvm2)

tks a lot