How to share global variable between multiple task??

Hello,

I am using CC3200 LP, SDK 0.5.2 and TI RTOS. I have declared one character array globally in one header file.

static char buffer[50];

Now I have multiple tasks running simultaneously. One of the task modifies buffer value, I have noticed that in this same task buffer is successfully modified. But when I checked in another task value of buffer is null.

I don't want to use IPC. How can I share this buffer to multiple task..???

Thanks,

Niral