有人可以帮我解决以下闪亮的问题吗：
我需要制作一个条件面板，但在这里我不希望它出现，除非有人选择女性。然而，当我运行此代码时，条件面板出现在页面中。
任何帮助都感激不尽 ...
selectInput("gender",
"What is your gender?",
choices = c(Male="Male", Female="Female")),
conditionalPanel(condition = "input.gender=='Female'",
selectInput("cond_sel",
"Are you pregnant?",
c("Yes", "No"))))
try
selectInput("gender",
"What is your gender?",
choices = c(Male="Male", Female="Female"),selected='Male'),
conditionalPanel(condition = "input.gender=='Female'",
selectInput("cond_sel",
"Are you pregnant?",
c("Yes", "No"),selected='No')))
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