Calling an internet page with parms

Hi every one ,

i have this url  :

https://vetclick.co.il/AllUsersAccess/services/vtrservice.aspx?Key=Rama662383!!&Chip=985120013391069

the number at the last changes by the click of the user

the page displays a string with some parameters ( which i handle afterwards )

i want to catch the returned string

this is my code :

wf_get_mispar_info(is_mispar)

(
     inet iinet_base
     GetContextService("Internet", iinet_base)
     str = "https://vetclick.co.il/AllUsersAccess/services/vtrservice.aspx?Key=Rama662383!!&Chip=" + is_mispar

)

is it ok ?  whats next ? PostUrl() , GetUrl() ?

i read about them but didnt understand the use of it

thanx

Moshe