Implicit Variables in Maximo Automation Scripts

Implicit variables are those variables which need not be defined separately in the script. Some of the variables can be used directly ex: app, user, mbo. Some need to be associated with other variables we declare, ex: var_required (var is the user defined variable)
Below are the list of some of the implicit variables.

Name	Type	Description	Availability
app	String	Name of the Maximo application where the script is executing	All the launchpoints
mbo	psdi.mbo.Mbo	Current Mbo in the context of script execution. In case of Object LP it is the object in which the script is executed. In case of Attribute launchpoint it is the owner of the attribute in which the script is executed. In case of Action launchpoint it is same as the escalation or the workflow object.	All the launchpoints
mboname	String	Name of the current mbo in the context of script execution	All the launchpoints
user	String	Name of the user whose action initiated the script	All the launchpoints
errorkey	String	This is used to throw MXExceptions this works with errorgroup and params implict variables	All the launchpoints
errorgroup	String	This one points to the errorgroup of the MXException. Along with the errorkey it helps uniquely point to an error message	All the launchpoints
params	String[]	This is the parameters of the MXException	All the launchpoints
interactive	boolean	Indicates whether the script is running in an active user session or a non-user background session such as integration transaction/cron task.	All the launchpoints
evalresult	boolean	The boolean variable of type OUT to indicate the result of the condition evaluation.	Only custom condition launchpoint
onadd	boolean	This boolean variable indicates whether the mbo in the script being added	All launchpoint
ondelete	boolean	This boolean variable indicates whether the mbo in the script being deleted	All launchpoint
onupdate	boolean	This boolean variable indicates whether the mbo in the script being updated	All launchpoint
action	String	Name of the action that generates	Action launchpoint
scriptName	String	Name of the script being run	All launchpoint
launchPoint	String	Name of the launchpoint for the corresponding script being run	All launchpoint
scriptHome	psdi.mbo.Mbo	Refers to the mbo that is currently being worked on.	Action launchpoint
wfinstance	psdi.workflow.WFInstance	Indicates the workflow from which the current action was started	Action launchpoint (only when the action is launched fromteh workflow)

Below are some of the variables which can be used only after associating with the user defined variables:

Name	Type	Description	Availability
var_hidden	boolean	Retrives or sets the hidden flag to the business object attribute	All launchpoint
var_initial	Same as the variable	Provides the initial value for an attribute retrieved from the MBO	All launchpoint
var_internal	Same as the variable	Provides the internal value for a SYNONYMDOMAIN entry	All launchpoint
var_modified	boolean	Provides a flag that indicates whether the value for an attribute was modified	All launchpoint
var_required	boolean	Sets the required flag for the defined attribute	All launchpoint
var_readonly	boolean	Sets the read-only flag for the defined attribute	All launchpoint
var_previous	Same as the variable	Provides the previous value for an attribute retrieved from the MBO	Attribute launchpoint (only for the attribute that generated)

Please leave below comments if you need any help regarding variables.