Sending vectors in things Speak

Hi all,

I have created a private channel with 4 fields. The first 3 fields have only one value so it's ok, however the fourth one is a vector, so I need to send all the values in one field. How can I do it? I saw a similar question However I didn't get it.

here is the command :

    thingSpeakWrite(channelID,'Fields',[1,2,3,4],'Values', {50,1,49,0},'WriteKey',writeKey)

So in the fourth value instead of "0", I want to put a vector like this A=[1 0.2 0 3.2].

thanks in advance!