StartOfLastTag

Returns the start date and time of the last closed tag entry for the specified tag.

date/time StartOfLastTag(string tagName)

Example

StartOfLastTag("Sand problem")

Returns the start date and time of the last closed tag entry for the specified tag and specified entity.

date/time StartOfLastTag(string tagName, string entityName)

Example 

StartOfLastTag("Sand problem", "Well 1")