"array out of range"on using iMAonArray - arrays

Question

I'd like to ask a bit help: I want to integrate a rule to my EA but I cannot make an array properly.. The rule would be "if the SMA of RSI on higher TF is above/under blabla..."
so here is my code:
double MA;
double RSIBuf[];
double MaBuf[];
ArrayResize(RSIBuf,0);
int counted_bars=IndicatorCounted();
int limit = Bars-counted_bars-1;
for(int i=limit; i>=0; i--)
{
RSIBuf[i] = (iRSI(NULL,higherTF,RSIPeriod,0,i));
MaBuf[i] = iMAOnArray(RSIBuf,higherTF,RSI_SMA,0,0,i);
}
MA = MaBuf[0];
...
direction Trend=NEUTRAL;
if(MA>RSI_Up ) Trend=UP;
the MT4 says its an error on RSIBuf[] Line
Where I made wrong? thanks for helping..
wicha

Answer 1

You were saying it is an EA, but you're using an indicator code.
In an Indicator, you would want to declare buffers as buffers:
IndicatorBuffers(2); //Allocate memory for buffers
double RSIBuf[]; //indicator buffers
double MaBuf[];
// Bind the array and allocated memory to an actual double-array dynamic buffer
SetIndexBuffer(0, RSIBuf);
SetIndexBuffer(1, MaBuf);
int counted_bars=IndicatorCounted();
int limit = Bars-counted_bars-1;
for(int i=limit; i>=0; i--)
{
RSIBuf[i] = iRSI(NULL,higherTF,RSIPeriod,0,i);
MaBuf[i] = iMAOnArray(RSIBuf,higherTF,RSI_SMA,0,0,i);
}
MA = MaBuf[0];
If it was in an EA, you would have to allocate enough memory in advance, like this:
int maxBars = TerminalInfoInteger(TERMINAL_MAXBARS);
double RSIBuf[maxBars];
double MaBuf[maxBar];
And then you carry on as usual.