Error with index global in Lua recipe for foldit.org -

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i starting writing scripts foldit. first experience of lua, status "noob insight". in first script, want print out contactmap data. have copied , pasted functions http://foldit.wikia.com/wiki/foldit_lua_functions. error is:

attempt index global 'structure' (a nil value)

here code:

segmentcount = structure.getcount() print ("segment count: " .. segmentcount)  source = 1, segmentcount   target = source + 1, segmentcount     incontact = contactmap.iscontact(source, target)     heat = contactmap.getheat(source, target)     print("segments "..source..", ".. target..": heat = "..heat)   end end

thanks in advance enlightenment.

edit

the problem had loaded v1 recipe, , foldit continued treat v1 syntax. solution create new (scriptv2) recipe, , load same code.

you seem doing according documentation. error means contactmap not defined (has nil value) , code fails on accessing elements. i'd check version of foldit using documentation says contactmap new in version 2.


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