Show data for all months in selected graphic

[fgirardin]

Hello fellow Qlik users.

I have a report showing what items we bought for specific projects.

Dates range from 'A' to 'B' (date depends on task)

For example, we bought items for task001 from february 2016 to july 2016

I use these datas on 2 graphics:

Left graphic shows the total amount spent for this project (red bar is not relevant)

Right graphic shows the amount spent by months

At the moment if I select a specific month, left graphic value adapts and shows the amount for this month as well

I would like to be able to select specific months (via calendar for example) but I don't want the total amount column to change (I want it to always show the total amount on the left)

Left graphic expression is:

=sum({<OP = {Spentamount}>}((TotalAmount)*(Change)))                 

No dimension

Right graphic expression is:

=sum({<OP = {Spentamount}>}((TotalAmount)*(Change)))

Dimension is "month_text"

Script for dates is:

SET TimeFormat='hh:mm:ss';

SET DateFormat='DD.MM.YYYY';

SET TimestampFormat='DD.MM.YYYY hh:mm:ss[.fff]';

SET MonthNames='Janv;Févr;Mars;Avril;Mai;Juin;Juil;Août;Sept;Oct;Nov;Déc';

SET DayNames='lun;mar;mer;jeu;ven;sam;dim';

Is there a simple way to make the left graphic always use the total amount ?
If I'm not clear, feel free to as more informations.

Thank you for your time

FG