Thanks for the advice Fauzi.I repot the N.Rajah after i got it from you.I used my normal formula which i use for all my neps which is clay,black soil,perlite,normal moss,river sand,coconut fiber,wood barks,peat moss,coal mix.The drainage is good for this mix.
I know i cant grow it like its natural place but as long as its alive its fine for me.