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Use Failed property to check whether error occurred. Be careful with cascading properties, since cascaded access is usually implemented using temporary wrapper instances. So, if error is encountered deeper then at the first level, you may not get a possibility to know that unless Lingo error will be produced. Use debug mode to track down such conditions. Note also, that misspelled properties and methods will produce corresponding Lingo error in most cases.
See Debugging for related information.
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