+/*
+ if(fMagBG->GetButton(kFld0)->GetState()) fprintf(fp," TGeoGlobalMagField::Instance()->SetField(new AliMagF(\"Maps\",\"Maps\",2, 0,1,10.,2));//no field\n");
+ else if(fMagBG->GetButton(kFld2)->GetState()) fprintf(fp," TGeoGlobalMagField::Instance()->SetField(new AliMagF(\"Maps\",\"Maps\",2, 1,1,10,AliMagF::k2kG));//0.2 Tesla field\n");
+ else if(fMagBG->GetButton(kFld4)->GetState()) fprintf(fp," TGeoGlobalMagField::Instance()->SetField(new AliMagF(\"Maps\",\"Maps\",2, 1,1,10,AliMagF::k4kG));//0.4 Tesla field\n");
+ else if(fMagBG->GetButton(kFld5)->GetState()) fprintf(fp," TGeoGlobalMagField::Instance()->SetField(new AliMagF(\"Maps\",\"Maps\",2, 1,1,10,AliMagF::k5kG));//0.5 Tesla field\n");
+ else if(fMagBG->GetButton(kFld_2)->GetState()) fprintf(fp," TGeoGlobalMagField::Instance()->SetField(new AliMagF(\"Maps\",\"Maps\",2,-1,1,10,AliMagF::k2kG));//-0.2 Tesla field\n");
+ else if(fMagBG->GetButton(kFld_4)->GetState()) fprintf(fp," TGeoGlobalMagField::Instance()->SetField(new AliMagF(\"Maps\",\"Maps\",2,-1,1,10,AliMagF::k4kG));//-0.4 Tesla field\n");
+ else if(fMagBG->GetButton(kFld_5)->GetState()) fprintf(fp," TGeoGlobalMagField::Instance()->SetField(new AliMagF(\"Maps\",\"Maps\",2,-1,1,10,AliMagF::k5kG));//-0.5 Tesla field\n");
+*/