# 单据转换插件中
```C#
if (!msgF_QWZE_HTBM_Id.IsNullOrEmptyOrWhiteSpace())
{
rowEx["F_QWZE_HTBM_Id"] = msgF_QWZE_HTBM_Id;
var assistantField_F_QWZE_HTBM = (AssistantField)this.BusinessInfo.GetField("F_QWZE_HTBM");
var dynamicObj_F_QWZE_HTBM = BusinessDataServiceHelper.LoadSingle(this.Context, msgF_QWZE_HTBM_Id, assistantField_F_QWZE_HTBM.RefFormDynamicObjectType);
rowEx["F_QWZE_HTBM"] = dynamicObj_F_QWZE_HTBM;
}
```
# 单据服务插件中
```C#
var assistantField = (AssistantField)this.BusinessInfo.GetField("单据的字段标识");
var dynamicObj = BusinessDataServiceHelper.LoadSingle(this.Context, 内码ID, assistantField.RefFormDynamicObjectType);
```
