Matlab error

at 1st time, my funtion is :
>> n = [0:25];
>> m = [0:10];
>> x = (m+1){[(n-2m) == 0] - [(n-2m-1) == 0]};

Error: Unbalanced or unexpected parenthesis or bracket

at 2nd time, i use distribution, and i still get the error :
>> n = [0:25];
>> m = [0:10];
>> x = (m+1)[(n-2m) == 0] - (m+1)[(n-2m-1) == 0];

Error: Unbalanced or unexpected parenthesis or bracket

can anyone tell me what is wrong, thanks