Здравствуйте.Нужна помощь, не получ

Здравствуйте.
Нужна помощь, не получается отметить значение уже после построения списка.
Предположим есть список который заполняется из массива и есть переменная, которая меняется и если её значение равно значению из списка, то значение отмечается.

Если не понятно объяснил, тогда по другому. Как установить атрибут отмечен для значения из списка?

Results (English) 1:

Hello.Need help, I can't mention value already after building the list.Suppose you have a list that is populated from the array is a variable that is changing and if its value is equal to the value from the list, the value of the notes.It is not clear if explained, then the other. How to set the attribute is marked for a value in a list?

Results (English) 2:

Hello.
Need help, it is impossible to note the value after the construction of the list.
Suppose there is a list that is populated from an array is a variable that is changing, and if its value is equal to the value from the list, then the value of the notes. If you do not clearly explained, then on another. How to set the attribute is marked for value from the list?

Results (English) 3:

Hello.
need assistance, this is not possible to note value is already after the building of a list.
suppose there is a list which is filled from the array and there is a variable,That is changing, and if its value is equal to the value in the list, then the value is.lord if not understandable explained, then on to another. How to set the attribute marked for the values from the list?