```python
import clr
clr.AddReference('Kingdee.BOS')
clr.AddReference('Kingdee.BOS.Core')
clr.AddReference('Kingdee.BOS.App')
from Kingdee.BOS import *
from Kingdee.BOS.Core.DynamicForm.PlugIn import *
from Kingdee.BOS.Core.Base import *
def OnPreparePropertys(e):
e.FieldKeys.Add("F_ABC_CheckBox")
def BeforeExecuteOperationTransaction(e):
if this.Option!=None:
DIC=this.Option.GetVariables()#获取所有参数集合
CurrentSelectedRows=DIC["_BillOperationSelectedRows_"]#获取当前操作关联的表单实体选中的行信息
selectEntryIds = []
for selectedRows in CurrentSelectedRows:
selectEntryIds.append(selectedRows.EntryPrimaryKeyValue)#获取行内码
if e.SelectedRows == None:
return
for row in e.SelectedRows:
entrys = row.DataEntity["ReqEntry"]#单据体实体
for entry in entrys:
#遍历单据体若当前行内码在选中的行内码集合中，则设置值
if str(entry["Id"]) in selectEntryIds:
entry["F_ABC_CheckBox"] = True
```
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