1. Make and excel file contain whatsapp list number followed by variable you want, then save as an excel file (.xlsx), MAKE SURE WRITE THE NUMBER STARTED WITH COUNTRY CODE, this is the example of the excel format:
actually the first line ([no_wa], [var1], etc.) does not need to be written, but to facilitate the explanation we write it like that.

2. Next, convert the format (.xlsx) to (.csv), for simplest way please search on Google with keywords "Convert excel to CSV online", we take the example of using Convertio.co with the following steps:

Select the file that was saved on your computer,

after that, please make sure everything is correct then click "Convert" and wait for loading to finish,

please click the "Download" button,

after that you will get your broadcast list which has changed to CSV format like this:

3. Next, please go to the broadcast tab menu on the Woowa dashboard, then upload the CSV file earlier:

after selecting the file then wait for the "Success" notification to appear like this:

if you click "OK" then the page will reload automatically and a display like this will appear:

4. The next step is to create a broadcast message template, there are two elements that need attention:
- spintext, group of words which have similar meanings (synonyms) separated by "|" which aims to do spin / random words so that the template sent to number A is not identical to the one sent to numbers B and C and D and so on, the example of the application is as follows, "{haaloooo|good morning|hi} my customer", when you do the broadcast it will bring up variations:
a) haaloooo my customer
b) good morning my customer
c) hi my customer

- variables, we can call data in the contact list using variables by writing "[varx]", x is the order of variables from left to right after the variable [no_wa], for example:
"919064537262,Amitabh Bachchan,t-shirt,$40"
then when we write [no_wa] in the broadcast template, it will appear 919064537262, when writing [var1] then it will appearAmitabh Bachchan, [var2] t-shirt, and [var3] $40.

The purpose of the two elements above (spintext and variables), are to reduce the risk of whatsapp numbers been banned 'cause of broadcasts activity, because one of banned number's main reason is the number send bulk identical messages in the same time.

Then the example of writing a broadcast template is as follows:

5. When everything is ready, make sure you select the sender number that has the status phone_online (already scanned qr code), then select which list will be sent or you can also directly select all list, then click "Send All":

after that you'll see each status for every number will change to "Message Sent" like this:
*DON'T CLOSE YOUR BROWSER UNTIL ALL LIST BEEN SENT

The messages will be sent with a random interval between 1-30 seconds by the Woowa system to avoid being detected as a robot, we don't concern about speed here, instead the security of your WA number is more important.

That's all and thank you :)