Something missing in your blocks (or something added)
But there must be a way of RETAINING the numbers, using a NUMBER filter instead of REMOVING alphabets using a alphabet filter. Coz in case there is a special character ??
The list of combinations is endless. So instead of REMOVING THE UNWANTED, KEEP THE WANTED !
It is easier to avoid your data pollution upstream than to try to clean it up downstream.
Your data should have been set up as:
- Cigarette (Rs)
- 2000
This sample app shows how much easier this organization makes life for you ...
I am maintaining a record of daily expenses
Home Screen
Add Data
Add More Data
View Details
It was an after thought, in case there is a wrong entry or a double entry, and user desires to REMOVE a record, then the record shud get DELETED, and amount added to TOTAL shud also get reduced.
Yes, you could approach things the other ways around, instead of removing the letters, just keep the numbers (and/or any other characters you may want to include). Create a list of the numbers.
can you share that project with us
Here are the blocks (draggable) !!
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Please share the project with me 
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Yes, you can just drag&drop to blocks editor.
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you mean the image can be a block
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Wow, this is like a magic 
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Greetings all,
As the MIT App Inventor Ed Team we were working on a Voice Calculator project and in the Japanese version of the project one runs into a problem as there are no spaces between the numbers as Prof. Yamamoto's post discusses here:
We ran into a similar problem in the Chinese version of the project also and there is a discussion in the App Inventor team whether adding an extractNumbers text block to App Inventor would make sense. It is wonderful coincidence that the community is also discussing this today thanks to Anup_Ludra. We will let you know what is the outcome of this discussion hopefully in a few weeks.
Please note that Prof Yamamoto already suggests a great solution
using Regular Expressions using Kevin Ku's extension: https://community.thunkable.com/t/regular-expression-extension/3657
This extension should be importable to App Inventor by changing the file name a bit to: cnkevinkunRegEx.aix
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Oh, that is the perfect solution so far. I never use regex enough. I find it a little confusing, but is very powerful.
Is Number block is OK until the OP asks for a decimal point or a space to be included 
(regex can probably be manipulated to include these....)
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You are right. In that case we can check FIRST for the point as an exception to the rule, advance to the next position and continue with the normal numbers check.
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