in fact is easier than you can imagine.
You can do like that :
If, for example, you have 5 variables to send :
a , b, c, d and e
you can write :
t = a & "&field2=" & b & "&field3=" & c & "&field4=" & d & "&field5=" & e
sendts(key, 1, t)
Let us know if this works for you.
CiccioCB