Description for value help field for custom infotype field

Hi,

I`ve got to include a field in custom infotype. This field has got a value help attached to it. The values to be displayed in the value help are stored in the domain of the field(in the dictionary).

The requirement is that once I select a value from the F4 help, the description for that value should be fetched and be dispalyed on the screen.

I`m using the FM "<b>AM_READ_TEXT_ON_DOMAIN_VALUE</b>" to read the description from the domain ,but unable to make it display it on the screen.

Can anyone suggest me as what should I do for displaying the description in the custom infotype screen.

Regards,

Farhana