Use a variable to add the costs of premium features that are selected or deselected using an iOS switch component.
See a video of how to do this step-by-step in this webinar:
https://support.proto.io/hc/en-us/articles/115001585411-Model-advanced-prototypes-that-use-variables-part-II
TAGS:
variables
variable
math
addition
switch
switches
fire an items event
Todd Siegel