| Input Parameters | Significance |
| DtvLong idm | mask Id |
| DtvLong but | Id of the Select button area |
| Output Parameters | Significance |
| none | - |
| Return Code | Significance |
| 0 | all ok |
The Select button area is linked with the mask. Within the mask you can define buttons for the element-selection-state (records selected).
The function automatically invoke any set mask listener function.