Why I can not get value field in magic field to page wordpress?

Hi all I am a new of wordpress ,First I am sorry for my english so bad,I have project that continue from other web developer, So I have problam with plugin magic field ,I can not get value field of magic field, I try to search google ,and I test in localhost (example, echo get('fieldname');) its work in localhost, but when I try in server its not work,and I try to follow the code that like (example: echo get('fieldname',1,1,1,270));it not work but .I dont understand what is 1,1,1,270 ,who can help me pleast,

via Chebli Mohamed