ConditionalPanel doesn't support variables with dot in the name, any work around?

ConditionalPanel doesn't support variables with dot in the name, any work
around?

This would work
checkboxInput("test", "test", TRUE),
conditionalPanel(
condition="input.test",
h2("test test")
),
but this not
checkboxInput("tes.t", "tes.t", TRUE),
conditionalPanel(
condition="input.tes.t",
h2("tes.t tes.t")
),
Where in the document does it say the name with dots are not supported?
Are there any work around so I don't have to change my variable names?