What's wrong with my Array Coding?

I'm new to array. I wrote this but I always get 0, no matter it's Osma[0], Osma[1] or Osma[2] or whatever number I used. What did I do wrong? Please help. Thank you.

int k;
int limit = 100;
double Osma[];


for(k=0; k<=limit; k++)
{
Osma[k] = iOsMA(Symbol(),0,240,1440,144,PRICE_CLOSE,k);
}
Print(Osma[2]);

You have to resize dynamic arrays before you use them. Use the ArrayResize function.

Thank you Nicholishen! Problem solved!