不对。应该用 both of you…

Both of you have to go to the meeting now. 你俩现在得去开会。

即 both 不能直接用于人称代词前面。又如：

Both of you should be punished for fighting. It takes two, you know. 你们两个都该为打架受罚，一个巴掌拍不响，你是知道的。

Both of us were born on March 17th. 我们俩都是三月十七日出生的。

Both of them agreed that it was a good idea. 他们俩都同意这是一个好主意。