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Postsdbo
PO
 

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    <p>I suppose, the error cause is that the Cache <code>get</code> method returns null during the 1st execution when the cache is empty. The <code>Utilities.jsonParse</code> throws an exception and the cache becomes in any case empty. Try to use the following modified code.</p> <pre><code>function _responseToNext(e) { var app = UiApp.getActiveApplication(); app.getElementById('btnPrev').setEnabled(true); var cachedCurrent = CacheService.getPublicCache().get('currentItem'); var current; if (cachedCurrent == null) { current = 0; } else { current = parseInt(cachedCurrent); } var cachedAgendaItems = CacheService.getPublicCache().get('agenda'); var agendaItems; if (cachedAgendaItems == null) { agendaItems = [][]; } else { agendaItems = Utilities.jsonParse(); } agendaItems[current]['notes'] = e.parameter.tAreaNotes; agendaItems[current]['status'] = e.parameter.lboxStatus; CacheService.getPublicCache().put('agenda', Utilities.jsonStringify(agendaItems)); current = current + 1; CacheService.getPublicCache().put('currentItem', current); fillAgendaDetail(app); // only enabled 'Next' if there are more items in the agenda if (current &lt; agendaItems.length-1) { app.getElementById('btnNext').setEnabled(true); } return app; } </code></pre> <p>Also please mention that the Public Cache (<code>CacheService.getPublicCache()</code>) is the same for all users of your script. In your case, this means, if two users <code>user1@example.com</code> and <code>user2@example.com</code> use the script they will have the same <code>current</code> and <code>agendaItems</code> variables values, i.e. it can be a situation when the <code>_responseToNext</code> handler is already executed under the <code>user1</code> authority - the <code>current</code> variable is equal to 1, after the user2 executes the <code>_responseToNext</code> handler - the <code>current</code> variable is equal to 2 and so on. If you do not need such behaviour, use the <code>CacheService.getPrivateCache()</code>.</p>
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    1. PO"Error Encountered: Invalid Argument" in handler function
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    1. USmegabyte1024
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    1. PO"Error Encountered: Invalid Argument" in handler function
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    1. COI'm not sure if this is the actual cause since I assign a value to cache at the beginning of the calling function. However, I'm no longer seeing the error, so Thanks!
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