用定制可视用户对象封装了一个按钮控件和图形控件,但是在主窗口uo_1的mousedown事件中写入脚本uo_1.p_1.picturename="D:\10.bmp"的时候,出错:the identifier 'xpos' conflicts with an existing property with this name,the new definition of 'xpos' will take precedence and the prior value will be ignored until this version of 'xpos' goes out of scope

请教这个究竟是什么意思阿??