Histogram by PQ Systems

I am trying to create a histogram by importing SPC hisotgram. I am unable to find any clear documentation. I am trying to

plot datavalue in value field and date in order field but it is just giving me a single line. I have used the other hisotgram and it looks perfectly shaped but i am unbale to figure out how to make SPC histogram look correct. can someone please help 

 This is something how my data looks as below. I am taking count of Datavalue as frequency and Datavalue in Values field of green histogram below. I am using the same Datavalue in Values field but unable to genrate a proper histogram

PQ Histogram