Expression tag and script modules

Ignition
1

Is it possible to use script modules with expression tag?

For example I have function in script modules:
def testScript(testString):
return testString

If I bind expression to a text label, it is working just fine:
runScript(“app.util.testScript(‘some string’)”)
Label is displaying ‘some string’ text.

But if I bind it to type String Expression tag, it would give me quality ‘Evaluation Error’ and null value.

2

Check out Nick’s response in the forum. Maybe someone with the 7.7 beta can see if global scripts can fix this?

3

Thank you!

4

I need that for example to resolve such issue:

I get tag value in such format from expression tag with httpGet function:
+.11100000E+02
which is really float. I can display it as 11.1 for example in label with float() Python function.
If I try to use toFloat() Expression function, it does not work.

So as I understand in version 7.7 I could call a Script Modules function in Expression Tag to convert value to float with Python functionality. Something like app.util.float(httpGet())

Or is it possible to format such value as +.11100000E+02 to float as 11.1 in Expression Tag?