How to ? same indicator different timefame, used in same time

 

i have a question , that ea is only used for one chart , example 5m charts or 15m charts , can't hook to two charts 5m and 15m.

here is a simple ea

//+------------------------------------------------------------------+

//| aaa.mq4 |

//| Copyright ?2007, MetaQuotes Software Corp. |

//| http://www.metaquotes.net |

//+------------------------------------------------------------------+

#property copyright "Copyright ?2007, MetaQuotes Software Corp."

#property link "http://www.metaquotes.net"

//+------------------------------------------------------------------+

//| expert initialization function |

//+------------------------------------------------------------------+

int init()

{

//----

//----

return(0);

}

//+------------------------------------------------------------------+

//| expert deinitialization function |

//+------------------------------------------------------------------+

int deinit()

{

//----

//----

return(0);

}

//+------------------------------------------------------------------+

//| expert start function |

//+------------------------------------------------------------------+

int start()

{

//----

Comment(iStochastic(NULL,15,5,3,3,MODE_SMA,0,MODE_MAIN,0) );

//----

return(0);

}

//+------------------------------------------------------------------+

this can display value of 15m timeframe kdj, but if you hook it to 5m charts ,always display 0, if you hook it to 5m charts ,display normal value;

and if you change it to use 5m timeframe kdj, then you hook it to 5m display normal value ,but if you hook it to 15m charts ,display 0 always.

so here is the question:

how to use those two timeframe 5m and 15m kdj value in same time ?

thank you .