MsgFrameValueExist

Syntax

MsgFrameValueExist(field);

field

A string specifying the name of a field in the current frame.

Description

Checks if the specified field contains a value.

Returns

	The field value exists.
	The field value does not exist.

Example

In the following examples, the frame contains the blocks blkA, blkB, and blkC structured as shown in the figure below.

Example 74

Checking if the field idType in the second instance of blkA contains a value.

The following script returns 1 if the field idType in the second instance of block blkA contains a value:

$fieldExists=MsgFrameValueExists("blkA:2/idType");

 

Example 75

Checking if the field idType in the second instance of blkB in the first instance of blkA contains a value.

The following script returns 1 if the field idType in the second instance of block blkB in the first instance of block blkA contains a value:

$fieldExists=MsgFrameValueExists("blkA:1/blkB:2/idType");

 

Example 76

Checking if the field idType in the second instance of blkB in the N:th instance of blkA contains a value.

The following script sample includes a counter to specify the N:th instance of block blkA:

...

$counter = 1;

$fieldExists=MsgFrameValueExists("blkA:" + $counter +"/blkB:2/idType");

$counter++;

...