[Eeglablist] A question about rejecting extreme values

[lichunyue]

 Hi everyone,
I want to reject artifacts by "rejecting extreme values",and when i input "pop_eegthresh( EEG,1);" in command window of matlab,the window pops up:
I write parameters as follow:

 then,there are errors on the command window.
I do not know how to solve this question.
thank you!
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