Grid ASCII art code golf

Dyalog APL, 17 13 10 bytes

Prompts for an enclosed array containing (row, column) and then for a character. Gives INDEX ERROR on faulty input.

⊖⍞@⎕⊢5 5⍴0

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⊖ flip upside-down the result of

⍞ inputted-character

@ replacing the content at position

⎕ evaluated-input (enclosed row, column)

⊢ of

5 5⍴ 5×5 array of

0 zeros

Ruby, 157 149 bytes

g=(1..5).map{[0]*5}
loop{puts g.map(&:join).join ?\n
x=gets.match /\((.),(.),(.)\)/
a,b=x[1].hex,x[2].hex
1/0 if a<1||a>5||b<1||b>5
g[5-b][a-1]=x[3]}

Error on malformed input or out of bound position

Thanks to ConorO'Brien (8 bytes) and afuous (2 bytes) for helping saving bytes

Batch, 199 bytes

@echo off
if %1 gtr 0 if %1 lss 6 if %2 gtr 0 if %2 lss 6 goto g
if
:g
for /l %%j in (5,1,-1)do call:l %* %%j
exit/b
:l
set s=000000
if %2==%2 call set s=%%s:~0,%1%%%3%%s:~%1%%
echo %s:~1,5%

Errors out if the position is out of range.