GetVar Error

[lh555]

Hi Jeremy,

I’ve been trying to write code for an experiment that at one point prints out the value of a Var element. However, I can’t get it to work and get an error.
For reference, this is the code:

PennController.ResetPrefix(null);
newTrial('test',
    newVar('var-int','hello')
    ,
    newText('text',getVar('var-int'))
        .print()
    ,
    newButton('button','Click')
        .print()
        .wait()
)

I get the following error: ‘Command ‘replace’ unknown on Var element ‘hello’’
Any help would be greatly appreciated.

[Jeremy]

Hi,

You cannot reference a Var element in a newX command, because elements are created upon opening the experiment but evaluated upon runtime

The solution is to use the .text command:

newTrial('test',
    newVar('var-int','hello')
    ,
    newText('text')
        .text( getVar('var-int') ) 
        .print()
    ,
    newButton('button','Click')
        .print()
        .wait()
)

Jeremy

[Author]

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