Flexible Radio Button Group not work in tab panels

Hello everyone:

  my job contains some mutex selections,and I try to make them into radio button groups.

  I opened a new panel and tried the RadioBG_XXXX functions,it worked fine.But when I supposed to put that panel into tab by using InsertPanelAsTabPage,radios came out,while mutex-selection effects negated.

 Someone got me an idea pls?

code works:

int panelHandle = LoadPanel (0, "test_sele.uir", Sele);
int ctraryHandle = NewCtrlArray (panelHandle);
RadioBG_CreateFromControlArray (ctraryHandle);
RadioBG_AddOption (ctraryHandle, "Radio 1", -1, 15, 15);
RadioBG_AddOption (ctraryHandle, "Radio 2", -1, 30, 15);
RadioBG_AddOption (ctraryHandle, "Radio 3", -1, 45, 15);

code doesn't work:

int panelHandle = LoadPanel (0, "test_sele.uir", Sele);
DeleteTabPage (mainPanelHandle, Main_Tab, 0, -1);
InsertPanelAsTabPage (mainPanelHandle, Main_Tab, -1, panelHandle);
int tpHandle = 0;
GetPanelHandleFromTabPage (mainPanelHandle, Main_Tab, 0, &tpHandle);
int ctraryHandle = NewCtrlArray (tpHandle);
RadioBG_CreateFromControlArray (ctraryHandle);
RadioBG_AddOption (ctraryHandle, "Radio 1", -1, 15, 15);
RadioBG_AddOption (ctraryHandle, "Radio 2", -1, 30, 15);
RadioBG_AddOption (ctraryHandle, "Radio 3", -1, 45, 15);