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-rw-r--r--libs/uvl/luasrc/uvl/datatypes.lua2
1 files changed, 2 insertions, 0 deletions
diff --git a/libs/uvl/luasrc/uvl/datatypes.lua b/libs/uvl/luasrc/uvl/datatypes.lua
index 971bb9d75..fc37fa3c6 100644
--- a/libs/uvl/luasrc/uvl/datatypes.lua
+++ b/libs/uvl/luasrc/uvl/datatypes.lua
@@ -29,6 +29,8 @@ function boolean( val )
return true
elseif val == "0" or val == "no" or val == "off" or val == "false" then
return true
+ elseif val == "" or val == nil then
+ return true
end
return false