Carrying Variable Values across two or more storyfile

Hi there,

I am currently working on a game base project.Which has more than 40 levels and we create theme all in a separate storyfiles. To avoid files from crash. Because of that we are trying to call the score from one file to another file in SCORM Cloude.

for Eg.

If get 80/100 in level 01

and 

If i get  60/100 in level 02

then level 02 score shoud be 80+60 =140

client requested   us to carry the last levels score in another level but we have different file with us. And i am not a java script expert so can you please help me to carry and get the the score on SCORM Cloude.