Loading MAT file problem

My code is in 2 parts. I've run the code for the first part and got value of all variables either in single value or matrices. Then saved them as a single mat file named "1st_part_result".

in the beginning of the 2nd part of the code, input "Load '1st_part_result.mat';" , but it shows the following error:

Undefined function 'Load' for input arguments of type 'char'.

Error in main_program (line 7)

Load ('1st_part_result.mat')

Answer 1

[JESUS DAVID ARIZA ROYETH]

write the whole word in lowercase :

load('1st_part_result.mat')

[Adel Gohari]

many thanks. it is working well now.