Concept HDL的error

Concept HDL出现的错误：

INFO (voltage_on_hdl) HDL Power Symbol doesn't have voltage property. To turn off this warning please goto Tools->Options->Check and uncheck 'Voltage on HDL Symbols' option.

可是我的Symbol都设置了HDL_POWER属性的啊！这是怎么回事?

按照提示把'Voltage on HDL Symbols' 关了便可．

就是不想关提示，想找找问题出在哪里。