Google script regex match without results [closed] - regex

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I have the following bit in a google script that parses pdfs:
function extractPDFtext(text){
const regexp = /[w,W,s,S]*(\d{3}).?(\d{3}).?(\d{3}).?(\d{3})?.?(\d{3})?[\w\W]*?(\d+.\d+)/gm;
try{
let array = [...text.match(regexp)];
return array;
}catch(e){
let array = ["No items found"]
return array;
}
};
The existing regex partially works (because the pdf's are not all equal) and so I have to restrict the search/matching between words/results and when I try to do it, I get no results. I would like to retrieve the digits related to Reference and Amount tags, while ignoring any words and digits in between. And it's here that I'm having some trouble because on regex101 I get the full match + the correct capturing groups but once on the script, I get no results.
This is a regex example based on what was suggested on another question of mine but in the end has the same problem as any of my other attempts:
^Reference\b[^\d\n]*[\t ](\d{3})[\t ]*(\d{3})[\t ]*(\d{3})[\t ]*(\d{3})[\t ]*(\d{3})(?:\n(?!Amount\b)\S.*)*\nAmount\b[^\d\n]*[\t ](\d+(?:,\d+)?)\b
So I'm wondering if the problem is with the regex or with the script and how to solve in any of those circumstances.
Below, there's some dummy text example of the variable text where the regex is being used on, baring in mind that it can have more words after each "tag" (example: Reference of something // Amount of first payment:); it can have : or not.
Some dummy text that may have words in common like `reference` or `amount` throughout the document
Reference: 245 154 343 345 345
Entity: 34567
Amount: 11,11
Payment date: 14/07/2022
Some more text

Answer 1

Maybe your trying to do too much with one command. Try breaking it up as I show below.
console.log(text);
let ref = text.match(/Reference.+/gm);
if( ref.length > 0 ) {
ref = ref[0].match(/\d.+/);
console.log(ref[0]);
}
ref = text.match(/Amount.+/);
if( ref.length > 0 ) {
ref = ref[0].match(/\d.+/);
console.log(ref[0]);
}
Execution log
8:55:50 AM Notice Execution started
8:55:50 AM Info Some dummy text that may have words in common like `reference` or `amount` throughout the document
Reference: 245 154 343 345 345
Entity: 34567
Amount: 11,11
Payment date: 14/07/2022
Some more text
8:55:50 AM Info 245 154 343 345 345
8:55:50 AM Info 11,11
8:55:50 AM Notice Execution completed