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Loop - Expression |
| <AMLOOP ACTIVITY="expression" CONDITION="until" EXPRESSION="text"> |
Description:
Loops while or until the specified expression is true. With each successive iteration, the expression is re-evaluated. The loop ends after the condition is met or when a Break is encountered.
Used to continue executing a block of steps while or until a condition is met.
General
Property |
Type |
Required |
Default |
Markup |
Description |
Condition |
Text (options) |
Yes |
While |
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Specifies whether the loop should continue while the expression is true or until it is true. The available options are:
|
Expression |
Text |
Yes |
(Empty) |
EXPRESSION="thenumber=55" |
A valid BASIC expression that should be evaluated on each loop. |
NOTE: The sample AML code below can be copied and pasted directly into the Steps panel of the Task Builder. |
Sample 1: Loop until expression is true. This task will loop until the expression MyCounter=5 evaluates to TRUE. Within the loop, a dialog box will appear showing the current value of the variable which increments by one upon each successive loop.
<AMVARIABLE NAME="mycounter">1</AMVARIABLE> <AMLOOP TYPE="EXPRESSION" EXPRESSION="mycounter=5" CONDITION="until"> <AMMESSAGEBOX>%mycounter%</AMMESSAGEBOX> <AMINCREMENTVARIABLE RESULTVARIABLE="mycounter" /> </AMLOOP>
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Sample 2: Loop while the expression is true. This task will loop until the 'MyCounter' variable does not equal to 1 or 2. Within the loop, a dialog box will appear showing the current value of the variable.
<AMVARIABLE NAME="mycounter">1</AMVARIABLE> <AMLOOP TYPE="EXPRESSION" EXPRESSION="mycounter=1 or mycounter=2"> <AMMESSAGEBOX>%mycounter%</AMMESSAGEBOX> <AMINCREMENTVARIABLE RESULTVARIABLE="mycounter" /> </AMLOOP>
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