Concat the list that have variable that changed in a loop

[#1]

Hi, 
I'm struggle to concat multiple list that has variable in it. I have a list, each item is string that is concatenated from a user-input variable. Since the variable is changed per loop, how I can get the list updated, and concat that list to other lists.

bank_pcs = {"BGB1BESS001_B"||bank||"_W","BGB1BESS001_B"||bank||"_A","BGB1BESS001_V"||bank||"_W"};
For (i = 1, i<=6, i++,
		bank_num = 6*(k-1)+i;
		bank = char(bank_num,10,0);
		Eval list (bank_pcs);
		bank_tags_i = bank_pcs;	
		bank_tags = concat (bank_tags, bank_tags_i)
)

Thanks

[#2]

See if this will give you what you want

For( i = 1, i <= 6, i++,
	bank_num = 6 * (k - 1) + i;
	theBankValue = Char( bank_num, 10, 0 );
	Eval(
		Substitute(
				Expr(
					bank_pcs = {"BGB1BESS001_B" || bank || "_W", "BGB1BESS001_B" || bank || "_A", "BGB1BESS001_V" || bank ||
					"_W"}
				),
			Expr( bank ), theBankValue
		)
	);
	bank_tags_i = bank_pcs;
	bank_tags = Concat( bank_tags, bank_tags_i );
);

[#3 · Accepted solution]

You were almost there.  You had the evallist(bank_pcs) but that's not what you're assigning to bank_tags_i.  This works for me.  

NamesDefaultToHere(1);
bank_pcs = {"BGB1BESS001_B"||bank||"_W","BGB1BESS001_B"||bank||"_A","BGB1BESS001_V"||bank||"_W"};
For (i = 1, i<=6, i++,
    bank_num = i; // changing this from yours because I assume you also have a k loop
    bank = char(bank_num,10,0);
    bank_tags_i = Evallist(bank_pcs);	
    if(i==1, 
        bank_tags = bank_tags_i // just if it isn't started yet. you're probably doing this in your k loop
    , //else
        bank_tags = concat (bank_tags, bank_tags_i)
    )
);
bank_tags;

[#4]

or, if you want a list-of-lists:

k = 11;
bank_tags = {};
bank_pcs = {"BGB1BESS001_B" || bank || "_W", "BGB1BESS001_B" || bank || "_A", "BGB1BESS001_V" || bank || "_W"};
For( i = 1, i <= 6, i++,
	bank_num = 6 * (k - 1) + i;
	bank = Char( bank_num, 10, 0 );
	bank_tags_i = Eval List( bank_pcs );
	bank_tags[1 + N Items( bank_tags )] = bank_tags_i;
);
Show( bank_tags );
/*{{"BGB1BESS001_B61_W", "BGB1BESS001_B61_A", "BGB1BESS001_V61_W"}, 
{"BGB1BESS001_B62_W", "BGB1BESS001_B62_A", "BGB1BESS001_V62_W"}, 
{"BGB1BESS001_B63_W", "BGB1BESS001_B63_A", "BGB1BESS001_V63_W"}, 
{"BGB1BESS001_B64_W", "BGB1BESS001_B64_A", "BGB1BESS001_V64_W"}, 
{"BGB1BESS001_B65_W", "BGB1BESS001_B65_A", "BGB1BESS001_V65_W"}, 
{"BGB1BESS001_B66_W", "BGB1BESS001_B66_A", "BGB1BESS001_V66_W"}}*/

If you want a string rather than a list, try @vince_faller  answer with Concat Items( bank_tags, "," ) to get the list items in a string with commas.

[#5]

Thank you! It works just as I expected.