Unresolved external FindTextW

I'd like to use the search option in the TAdvMemo but I receive an error.

I use the following code:

TFindOptions Options = TFindOptions() << frMatchCase;
AdvMemo1->FindText(Edit1->Text, Options);

I receive the following error:

[ILINK32 Error] Error: Unresolved external '__fastcall Advmemo::TAdvCustomMemo::FindTextW(System::UnicodeString, System::Set<Dialogs::TFindOption, 0, 12>)' referenced from C:\APPDATA\PROJECT\DEBUG\WIN32\FRMSYNTAXTEDITUNIT.OBJ

Can someone please help me out? Thank you in advance.