我要实现这样的 ${context:layout/images/${itemProperty.signImage}.png}。但我收到以下错误
Could not convert 'context:layout/images/${itemProperty.signImage' into a component parameter binding: Unable to locate asset 'context:layout/images/${itemProperty.signImage' (the file does not exist). [at classpath:net/web/app/sample/pages/Test.tml, line 30].
请任何人说我该如何实现。