How to change text after statictext+DynamicValue together

How to change text after statictext+DynamicValue together

My Question is related to limit value text :
i have 
FIX_TEXT + Variable value  --> then i get a value like ERROR# + 10  : Error#10
then i wanted to change this Error#10  ---> "any Text related to Error explanation !!! "

i cannot do @ LanguageFile"textChange" -- After value read from variable
any way to    1stly read value from variable then   static text + value to language file and convert to new text !!