load mat file in workspace

Question

I have a folder A that contains folders B and C

A--B
   C--|
     --|mat file  

at the folder level, I have a startup scrit and I want from this script to load data available in data.mat file available in C1 folder.

so from my script A_script.m , I did :

load('C/C1/data.mat');

content of script file :

function data_startup
%WHC_PROJECT_STARTUP
bdclose all;
load('B\C\data_v2.0.mat');

but this does nothing,data not loaded and no error raised ! can someone help me ?

thanks