How can i add option buttons to my menu items. The code i have written for menu items is given bellow. Please help.

if(aMenuId == R_GENAKER_LANG_MENU)
{
CEikMenuPaneItem::SData itemDataEN;
TBuf<16> ENCommandText;
iEikonEnv->ReadResource(ENCommandText, R_GENAKER_MENU_LANG_EN);
itemDataEN.iText=ENCommandText;
//itemDataEN.iCommandId=EEikCmdExit;
itemDataEN.iFlags=0;
itemDataEN.iCascadeId=0;
aMenuPane->AddMenuItemL(itemDataEN);

CEikMenuPaneItem::SData itemDataSP;
TBuf<16> SPCommandText;
iEikonEnv->ReadResource(SPCommandText, R_GENAKER_MENU_LANG_SP);
itemDataSP.iText=SPCommandText;
//itemData.iCommandId=EEikCmdExit;
itemDataSP.iFlags=0;
itemDataSP.iCascadeId=0;
aMenuPane->AddMenuItemL(itemDataSP);
}