Looping through a qvd

[#1]

Good afternoon,

I am trying to code the following portion of pseudo code into a Qlik script but am not having any luck

1. If Total Rebate Accum = 0
   1. New member paid = original member paid
   2. New plan paid = original plan paid
   3. New Rx Deductible = new member paid
   4. New Blend Deductible = Med Deduct + New Rx Deductible
2. If Total Rebate Accum > 0 and accum blend deduct < Ind_deductible
   1. New member Paid = total cost – Total rebate
   2. New Plan Paid = total Cost – New member Paid
   3. New Rx Deductible = new member paid
   4. New Blend Deductible = Med Deduct + New Rx Deductible

My attempt using a do while yielded no new fields as output:

Do while Rebate_Dollars = 0
LOAD
*,
[Clm Apprv Mem Paid] as Org_Mem_Paid,
[Clm Apprv Gross Due Amt] as Org_Plan_Paid,
[Clm Deduct Amt] as New_Mem_Paid,
MED_DEDUCT + [Clm Deduct Amt] as New_Blend_Ded,
LOOP
resident ACCUMPREP;

My attempt using nested if then else logic from post on Qlik Community. Obviously not correct based on syntax errors I see in editor.

CLAIMS1:
LOAD
*,
if(Rebate_Dollars = 0,{
[Clm Apprv Mem Paid] as Org_Mem_Paid,
[Clm Apprv Gross Due Amt] as Org_Plan_Paid,
[Clm Deduct Amt] as New_Mem_Paid,
MED_DEDUCT + [Clm Deduct Amt] as New_Blend_Ded});
elseif Rebate_Dollars = 0
resident ACCUMPREP;

My attempt using sub routine in an if statement.

CLAIMS1:
LOAD
*,
if(Rebate_Dollars = 0,
call ZeroRebates (Org_Mem_Paid, Org_Plan_Paid, New_Mem_Paid, New_Blend_Ded))
resident ACCUMPREP;

sub ZeroRebates (Org_Mem_Paid,Org_Plan_Paid,New_Mem_Paid,New_Blend_Ded)
Org_Mem_Paid = [Clm Apprv Mem Paid]
Org_Plan_Paid = [Clm Apprv Gross Due Amt]
New_Mem_Paid = [Clm Deduct Amt]
New_Blend_Ded = MED_DEDUCT + [Clm Deduct Amt]
endsub

If someone has any suggestions on how this logic would best be coded I would be greatful.

Thanks

S.