Tip

Easier Hide Formulas

Here's a very simple tip that has saved our team a lot of time and aggrevation.
To display information on an as-needed basis, we use many hide formulas. In
this way, we dynamically reveal fields, sections and layout regions based on a
user's answers "thus far". This in turn creates an interview of sorts which
can lead to many different and complex paths. As you can imagine, writing hide
formulas then becomes tricky. It is often hard to even think in terms of when
you want something hidden let alone code for it.

Then it dawned on me, why not write the hide formula in terms of when you want
the element shown. Then, surround the entire statement with the NOT operator
"!". It works and its much easier to implement and maintain.
Here's a working example:

!(
app_type_sel = "undetermined" &
gp_comm1 = "No" &
gp_comm2 = "No" &
( und14 = "No" |
( und1 = "Yes" & und9 = "No" ) ) )

This was first published in November 2000

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