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On the properties tabs for flow, flow step and form, where ever there are inputs that support templates, the template lookup supports any properties locally available in the global _data managed by the super admin user. This means that the _data property names that match a partially entered template name will be offered in the dropdown of matches. Templates throughout will be automatically validated when the form/flow is first loaded, upon upload of a form/flow or upon saving a form/flow, and will also take into account the global _data properties. Note that any _data used on the URL at runtime is not supported (and will not validate) with this functionality because it is not known at design time, only runtime. Also be aware that if a global _data property was used in a template and then the form/flow downloaded and uploaded into another frevvo instance that does not have that _data property, a validation error will happen (most likely on save). In this situation, the designer can either ignore the error, upload update the default _data properties or, if the validation is for a flow/form or flow step property that prevents saving the properties, add a hidden control of the same name so that validation passes.
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