diff --git a/typescript/base/single/label/abstract.label.ts b/typescript/base/single/label/abstract.label.ts
index 431d79ab6..60d6ee8fc 100644
--- a/typescript/base/single/label/abstract.label.ts
+++ b/typescript/base/single/label/abstract.label.ts
@@ -10,7 +10,7 @@ export declare class AbstractLabel extends Single {
         textHeight?: number | null;
         highLight?: boolean;
         handler?: Function | null;
-        text?: string;
+        text?: string | ((context: any) => string);
     } & Single['props']
 
     doRedMark(...args: any[]): void;