大佬们，我的公式如下：

select  

OT.FName as OT_FName,

U.FName as U_FName,

U.FForbidden as U_FForbidden,

OAT.FName as OAT_FName,

OAT.FDescription as OAT_FDescription

from t_ObjectType OT

join t_AccessControl AC on AC.FObjectID = OT.FObjectID  and AC.FObjectType = OT.FObjectType

join t_ObjectAccessType OAT on  OAT.FObjectID = AC.FObjectID  and OAT.FObjectType = AC.FObjectType 

join t_User U on AC.FUserID = U.FUserID

where 1 = 1

${if(len(treeComboBoxEditor0t_ObjectType)==0,"","AND OT.FObjectType ='"+${layer1}+"'AND OT.FObjectID ='"+${layer2}+"'")}

${if(len(comboBox1_t_User)==0,"","AND U.FName ='"+comboBox1_t_User+"'")}

order by U.FName

;

其中${if(len(treeComboBoxEditor0t_ObjectType)==0,"","AND OT.FObjectType ='"+${layer1}+"'AND OT.FObjectID ='"+${layer2}+"'")}是获取下拉树一级二级的值作为查询条件的，但是报错：错误代码:11300001 数据集 [kingdee] 配置错误'$' 附近有语法错误

想问下公式怎么改