Aegisub karaoke template error

[sap920]

I've tried in the last half hour trying to figure out whats the problem with a certain line.
Can someone please help me? (Thanks in advance)

Effect: code line all
Text: temp = {}; ci = {0,0}; cn = _G.unicode.len(orgline.text_stripped:gsub(" ","")); function set_temp(ref,val) temp[ref] = val return val end; delay = 800; delay_2 = 300

Error message:
Runtime error in template code: Expected 1 arguments, got 2
Code producing error: temp = {}; ci = {0,0}; cn = _G.unicode.len(orgline.text_stripped:gsub(" ","")); function set_temp(ref,val) temp[ref] = val return val end; delay = 800; delay_2 = 300