Is it safe to store an array of doubles in Sequence Data

Dear AE fellows,

I was wondering if storing an array of doubles in Sequence Data could cause memory problems.

I observe AfterEffects trigger a break point with memory error in Visual studio release mode only. But I'm not sure what exactly causes this problem (hard to debug  when it happens in release mode). My sequence Data structure looks like this.

typedef struct
{
	double coord[4][2];
	bool isFlatB; // indicator for type of data (flat/unflat)
	A_char stringP[1001];
}unflatSequenceData, * unflatSequenceDataP, ** unflatSequenceDataH;

struct flatSequenceData
{
	double coord[4][2];
	bool isFlatB; // indicator for type of data (flat/unflat)
	A_char user_input1_save[1001];
};

 Yaroslav