Calculated Field problem

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I created a Calculated Field name is : fieldname56

The Set Equation data as below:

(function(){
return 'Unit 10854 Balby Carr bank DONCASTER, United Kingdom';
})()

and i created other Calculated Field name is : fieldname57

The Set Equation data as below:

(function(){
var address=fieldname56;
jQuery('.display-here').html(
"<div class='col' data-label='Address:'>"+address+"</div>"
);
})()

The problem is only show the number “10854” . The English letters disappeared.
What should i do ?