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which one would be correct to use
"I am glad I was able to help."
VS
"I am glad I've been able to help."
Comments  
both of them are grammetically correct, but subject to scenario...
"I am glad I was able to help." - Already helped
"I am glad I've been able to help." - still doing or glad coz i can...
chechowhich one would be correct to use
"I am glad I was able to help."
VS
"I am glad I've been able to help."