[Freeswitch-users] having problem getting return value from lua script

[Vincent Xia]

when i was trying to get return value from lua script (with which sql query
was processed),

<action application="set" data="myvar=${expand(luarun GetDataFromDB.lua
${caller_id_number})}"/>
<action application="info" data="myvar=${myvar}"/>

GetDataFromDB.lua
--------------------------------------
callerid = argv[1]

-- DB sql query
...
varout = callerid..'abc'
return varout

the info shows "myvar=+OK.......", then i tried

<action application="set" data="myvar=${expand(lua GetDataFromDB.lua
${caller_id_number})}"/> -- using lua

GetDataFromDB.lua instead of luarun GetDataFromDB.lua
the info shows an empty string, "myvar=".

how to get the return value from lua script?
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