asp if语句嵌套问题，请教高手！！！

<%
cp_number=request.form("cp_number_text")
cp_name=request.form("cp_name_text")
cp_guige=request.form("cp_guige_select")
cp_miaoxu=request.form("cp_miaoxu_text")
cp_jiego=request.form("cp_jiego_select")
cp_version="V"& request.form("cp_version_text")
cp_fangxiangxi=request.form("cp_fangxiangxi_select")
cp_remark=request.form("cp_remark_text")
cp_output=request.form("cp_output_select")
cp_huanbao=request.form("cp_huanbao_select")
cp_state=request.form("cp_state_select")
cp_addtime=request.form("cp_addtime_text")
cp_file_name=request.form("cp_filename_text")
Server_MapPath=request.ServerVariables("APPL_PHYSICAL_PATH")

Dim bb,cc,dd
bb=InstrRev(cp_file_name,"\")
cc=len(cp_file_name)
file_name=Right(cp_file_name,cc-bb)
Target_

Response.Redirect 后的地址是不是错了？是不是又回到这个添加页了。。如果又回到添加页而没有提交数据就会出现你说的错误了。

<%
cp_number=request.form("cp_number_text")
cp_name=request.form("cp_name_text")
cp_guige=request.form("cp_guige_select")
cp_miaoxu=request.form("cp_miaoxu_text")
cp_jiego=request.form("cp_jiego_select")
cp_version="V"& request.form("cp_version_text")
cp_fangxiangxi=request.form("cp_fangxiangxi_select")
cp_remark=request.form("cp_remark_text")
cp_output=request.form("cp_output_select")
cp_huanbao=request.form("cp_huanbao_select")
cp_state=request.form("cp_state_select")
cp_addtime=request.form("cp_addtime_text")
cp_file_name=request.form("cp_filename_text")
Server_MapPath=request.ServerVariables("APPL_PHYSICAL_PATH")

Dim bb,cc,dd
bb=InstrRev(cp_file_name,"\")