Blockly: {textVariable} dosent work?

Setup, Configuration and Use Scripts & Rules
1

The following script is just an example to explain my problem:
image
translated to Javascript:

var _7BtextVariable_7D, Text01;


events.sendCommand('VI_TEST_02', 'abcdefg');
_7BtextVariable_7D = itemRegistry.getItem('VI_TEST_02').getState();
Text01 = _7BtextVariable_7D.charAt(2);
events.sendCommand('VI_TEST_01', Text01);

When running it, I get this error:

2023-02-04 21:45:01.365 [ERROR] [internal.handler.ScriptActionHandler] - Script execution of rule with UID 'Spotpriser2' failed: TypeError: _7BtextVariable_7D.charAt is not a function in <eval> at line number 6

I expected Text01 to become c.

Can someone help me?

/Torben

2

The problem is that it returns a State which is an object and not what you would expect it to be: a string.

Here is how you could view that (see the little inline script)

image
image1058×602 70.8 KB

The way you can make the state to become a string with a little trick by adding a “” to it which “forces” it to become a string.

image
image1316×574 70.6 KB

The good news is, though, that with 4.0 and the introduction with the new jsscripting library in the background (based on GraalVM instead of Nashorn) automatically stringifies it.

3

Thanks a lot Stefan for takeing yor time - that did the job.
I took me a litle time to build:
image

The block is not immediately visible on the list
Thanks for Blockly, it is fantastic for makeing rules/scripts when you don’t have much knowledge of programming.
In my case, you can call it “tool for a fool”
/Torben