RSI script help

[mii]

Hi,

I am trying to show a label "RSI today" and "RSI Previous day" on lower timeframe or any timeframe.
But my script is not considering the timeframe . even i try to use RSI(Period=day) its erroring out.
Could you please modify the below script to enforce daily RSI or MTF RSI reading of current day or current candle bar and previous day or previous candle bar.

def rsi2 = RSI()."RSI" from 1 bars ago; #
plot scan = rsi2;
AddLabel(yes, rsi2 + " RSI Value From 1 Days ago " , Color.YELLOW);
def rsi3 = RSI()."RSI" from 0 bars ago;
plot scan1 = rsi3;
AddLabel(yes, rsi3 + " RSI Value From today " , Color.YELLOW);

def bullishCrossover = rsi3 > rsi2;
def bearishCrossover =rsi3< rsi2;


AddLabel( rsi3 > rsi2, " RSI Value > previous bar " , Color.green);
AddLabel( rsi3 < rsi2, " RSI Value < previous bar " , Color.red);