15.1.6 Unprotecting Client-Set Hidden Items

Disable Value Protected when client-side logic sets a hidden page item's value.

Since P60_LONGITUDE and P60_LATITUDE are Hidden page items whose value gets set by a dynamic action in the page, remember to disable their Value Protected switch as shown below. If you forget this detail, your end users will see the following error when submitting the page:
Session state protection violation: 
This may be caused by manual alteration of protected page item P60_LATITUDE.

Figure 15-7 Disabling Value Protected on Hidden Item Set by Dynamic Actions