Mark Arber's penalty earned Dagenham and Redbridge a hard-fought victory over Swindon.
Raffaele De Vita went close for Swindon, forcing a finger-tip save from Chris Lewington.
The visitors were denied a spot-kick when Scott Doe appeared to trip De Vita, before Daggers' Brian Woodall scuffed his shot when clean through.
Arber blasted home from the spot after Paul Caddis tripped Gavin Tomlin to seal the points for Dagenham.
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Dagenham & Redbridge assistant boss Wayne Burnett told BBC London 94.9:
"I felt we played OK in the first half but knew we could up the tempo and put them under more pressure.
"We created more chances than we did on Saturday and it will take a while for the players, but the ones who came in tonight did fantastically.
"The staff were more pleased and overall we did fantastically well and it was a spirited performance."
Swindon Town manager Paolo di Canio told BBC Wiltshire:
"I didn't expect a first-half like this from my players.
"We should play much better with more character and I was upset at the break.
"They showed character in the second half but obviously it was too late and I'm very angry at all of them."