diff --git a/src/history_influxdb.c b/src/history_influxdb.c
index 4661aed..3a2824b 100644
--- a/src/history_influxdb.c
+++ b/src/history_influxdb.c
@@ -300,15 +300,15 @@ char *itemid_to_influx_data(zbx_uint64_t itemid)
 										// +------------------------------------------------+-----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------+
 										// find first '[' and last ']' in the key_ and for what is between use substring_index() to extract correct parameter
 				            "replace(replace(replace(replace(replace(replace(replace(replace(replace(i.name,"
-				            " '$1', substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 1)),"
-				            " '$2', substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 2)),"
-				            " '$3', substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 3)),"
-				            " '$4', substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 4)),"
-				            " '$5', substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 5)),"
-				            " '$6', substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 6)),"
-				            " '$7', substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 7)),"
-				            " '$8', substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 8)),"
-				            " '$9', substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 9)),"
+				            " '$1', substring_index(substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 1), ',', -1)),"
+				            " '$2', substring_index(substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 2), ',', -1)),"
+				            " '$3', substring_index(substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 3), ',', -1)),"
+				            " '$4', substring_index(substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 4), ',', -1)),"
+				            " '$5', substring_index(substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 5), ',', -1)),"
+				            " '$6', substring_index(substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 6), ',', -1)),"
+				            " '$7', substring_index(substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 7), ',', -1)),"
+				            " '$8', substring_index(substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 8), ',', -1)),"
+				            " '$9', substring_index(substring_index(substring(i.key_, position('[' in i.key_)+1, length(i.key_) - position('[' in i.key_) - position(']' in reverse(i.key_))), ',', 9), ',', -1)),"
 				            // or use plain item name if no variables to replace
 				            "i.name"
 				        "), "