Hi KCC :D
There are other ways but I make use of the element id name.
Enumeration
#Form0
#Web0
#BoutonGoto50
EndEnumeration
OpenWindow(#Form0, 664, 253, 411, 451, "New window ( 0 )", #PB_Window_SystemMenu | #PB_Window_SizeGadget | #PB_Window_TitleBar )
WebGadget(#Web0, 14, 20, 384, 401 ...