control 3 led (PWM) w/ 3 potentio on rf link 433mhz

Projects Networking, Protocols, and Devices
6 
#include <VirtualWire.h>

void setup()
{
Serial.begin(9600);
Serial.println("setup");
vw_setup(2000); 
vw_rx_start(); 
}

void loop()
{
uint8_t buf[VW_MAX_MESSAGE_LEN];
uint8_t buflen = VW_MAX_MESSAGE_LEN;
if (vw_get_message(buf, &buflen)) 
{
int i;

for (i = 0; i < buflen; i++)
{
char *token1 = strtok(buf, ":");
if(token1)
{
   char *token2 = strtok(NULL, ":");
   if(token2)
   {
      char *token3 = strtok(NULL, ":");
      if(token3)
      {
          // Got all the tokens...
      }
   }
}
}
}
}

error: invalid conversion from 'uint8_t*' to 'char*'

where to put this code?
(sorry i'am noob)