Urgent! problem to display 2 different KPIs conditionally in the same bar chart

[#1]

Hello,

I have a qlikview application in which I load the variable as follows in the load script section:

LET v_ReportWeek = '2016-W05';

I have the following requirement to develop a bar chart as follows:

Case scenario 1:

If user selects a week ('2016-W02') which is less than the v_ReportWeek, then in the same barchart I shall have displayed:

For selected week minus 1, that is Week '2016-W01' till week '2016-W04', the bar chart should show the KPI Stock. And in the same barchart, it should show the KPI 'Forcast' for v_ReportWeek plus 10 weeks in the future, that is till week '2016-W15'

Case scenario 2:

If user selects a week ('2016-W05') which is same as the v_ReportWeek, then in the same barchart I shall have displayed:

For selected week minus 1, that is Week '2016-04' , the bar chart should show the KPI Stock. And in the same barchart, it should show the KPI 'Forcast'  for v_ReportWeek plus 10 weeks in the future, that is till week '2016-W15'

Case scenario 3:

If user selects a week ('2016-W04') which is less than the v_ReportWeek, then in the same barchart I shall have displayed:

For selected week minus 1, that is Week '2016-W03' till week '2016-W04', the bar chart should show the KPI Stock. And in the same barchart, it should show the KPI 'Forcast' for v_ReportWeek plus 10 weeks in the future, that is till week '2016-W15'

I also have a Period_WeekCounter associated with each week in sequence. FOr example, for week 04 in 2016, counter is 108, and for week 05 the counter is 109 and so on...

In my bar char dimension, I'm using the column Yr_Wk_Frcst as follows:

Expression is : 

=if(Yr_Wk_Frcst < v_ReportWeek, sum(Stock), sum(Forcast))

but its not working as its not giving me previous week's display and future week's display correctly.

Can you please please help? its urgent.. thanks in advance

The data i use is :

OPE_WEK	OPE_YY	ItemCode	Yr_Wk_Frcst	Stock	Forcast	Period_WeekCounter
4	2016	A	2016-W04	1262	-	108
4	2016	A	2016-W04		1091	108
4	2016	A	2016-W05		1091	108
4	2016	A	2016-W06		1093	108
4	2016	A	2016-W07		1095	108
4	2016	A	2016-W08		1097	108
4	2016	A	2016-W09		1099	108
4	2016	A	2016-W10		1101	108
4	2016	A	2016-W11		1103	108
4	2016	A	2016-W12		1105	108
4	2016	A	2016-W13		1107	108
4	2016	A	2016-W14		1109	108
4	2016	A	2016-W15		1111	108
4	2016	A	2016-W16		1113	108
4	2016	A	2016-W17		1115	108
5	2016	A	2016-W05	1400	-	109
5	2016	A	2016-W05		2091	109
5	2016	A	2016-W06		2093	109
5	2016	A	2016-W07		2095	109
5	2016	A	2016-W08		2097	109
5	2016	A	2016-W09		2099	109
5	2016	A	2016-W10		2101	109
5	2016	A	2016-W11		2103	109
5	2016	A	2016-W12		2105	109
5	2016	A	2016-W13		2107	109
5	2016	A	2016-W14		2109	109
5	2016	A	2016-W15		2111	109
5	2016	A	2016-W16		2113	109
5	2016	A	2016-W17		2115	109