search within matrix for assign certain values

I have 2 matrices,Dim_label and Dimensionss Dimentionss is Bounding box result of image, saved at dim.mat file while Dim_label is box dimensions saved as (x,y , width, Height) i.e. saved at gt.mat file as i want to find the Dimensionss boxes that locate inside the Dim_label boxes. if located the Dimensionss will get label so i try the following code

    load gt.mat
load dim.mat
b=find(Dim_label(:,5)==2);
location=Dim_label(b,:)
%for x=1:size(Dimentionss,1)
   moree=find(Dimentionss(:,1)>=Dim_label(b,1)&... % x values
              Dimentionss(:,2)>=Dim_label(b,2)&...
              Dimentionss(:,3)<=Dim_label(b,3)&...
              Dimentionss(:,4)<=Dim_label(b,4))
Dimentionss(moree,5)=2 
Dimentionss

i try on Dim_label(:,5)==2 but the process will be repeated for the whole non zero rows in gt.mat file the error in Dimentionss matrix that the fifth column assigned with 2. How could i fix??