Hi, 

Is it possible to create linked drop down menus where you link to multiple values at once. it works fine if you link the values by defining separate drop down menus (like below) but is it possible to add all four RCPs to the 'when = ' part of one drop down (the users should be able to select all the same future time periods of the four RCPs) or should I repeat the same input drop down separately for the four RCPs?

@ct.input.dropdown('RCP',
label ='experiment', link=True,
values= ['rcp8_5', 'rcp6_0, 'rcp4_5', 'rcp2_6', 'historical'],
)

@ct.input.dropdown('time',
label ='30 year period', when = 'historical',
values= hist_dict.keys(),
)

@ct.input.dropdown('time',
label ='30 year period', when = 'rcp8_5' ,
values= fut_dict.keys(),
)

@ct.input.dropdown('time',
label ='30 year period', when = 'rcp6_0' ,
values= fut_dict.keys(),
)

etc.