| Input Parameters | Significance |
| DtvLong idf | field Id |
| DtvLong row | row position in the field |
| DtvLong num | integer |
| DtvLong drt | field-dirty-flag |
| Output Parameters | Significance |
| no | - |
| Return Code | Significance |
| 0 | no error |
| -1 | field Id is NULL |
| 1 | wrong row position |
| 2 | text string is zero pointer |
| 3 | wrong field type |
You can only write integer values in fields of the type integer, string, or calculate.
In > drt < you can specify, how the function is to treat the field-dirty-flag: