Error in my ttest2

Here is my t-test code: I am trying to do a ttest2 which is not independent so far I have:

T = [SJ SJ SJ CM CM SJW; CM SJW CMW SJW CMW CMW]';         
% Creates a matrix with the jump type numbers, so that each type is compared to the other

for ii=1:no_s;

    [Ttestmjh(ii,1) Ttestmjh(ii,2)]  = ttest2((jhmn(:,T(ii,1))),(jhmn(:,T(ii,2))));      
% Runs a 2 tailed t-test on the mean jump height for each jump type
    [Ttestsdjh(ii,1) Ttestsdjh(ii,2)] = ttest2((sdjh(:,T(ii,1))),(sdjh(:,T(ii,2))));     
% Runs a 2 tailed t-test on the sdev jump height for each jump type

end

no_s means number of subjects there are 6. SJ, CM, SJW, CMW are the different jump types Ttestmjh and Ttestsdjh are 2 matrices 6x2 double of Nan's that I made at the start of my code

error: Index exceeds matrix dimensions.

Error in code5 (line 160) [Ttestmjh(ii,1) Ttestmjh(ii,2)] = ttest2((jhmn(:,T(ii,1))),(jhmn(:,T(ii,2)))); % Runs a 2 tailed t-test on the mean jump height for each jump type

I have made sure I have no zeros anywhere in the data it is trying to look.