attiny85 transmit to arduino UNO virtualwire ~~~helpp!!!

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hihi im trying out RF communication by using attiny85 to transmit a character ...and receive it with arduino UNO.if character is correct then an LED lights up

transmitter = Cytron.io - Simplifying Digital Making

receiver = Cytron.io - Simplifying Digital Making

PROBLEM IS.....UNO doesnt receive anything .in other words, attiny is not transmiting properly. i tried arduino mega transmit to UNO receiver and it works. but NOT when using tiny85 as transmiter.

i've followed steps to burn atiny core files on attiny85 using UNO as ISP.

  1. High-Low Tech – Programming an ATtiny w/ Arduino 1.6 (or 1.0) folowed this step to add atiny core files into arduino IDE 1.0.5.

  2. i use atiny85 1Mhz internal clock speed for transmitter.....is it wrong? any1 successfully used VW on atiny85?